category.连接器_category.连接器品牌厂家，型号_价格_规格

类别是'category.端子 - 环形连接器' (10000)

所有品牌

产品型号	品牌	数据表	库存	价格(含增值税)	数量	工厂交货时间	生命周期状态	触点镀层	底架	安装类型	外壳材料	材料	房屋材料	材料 - 绝缘	本体材质	端子材料																																											包装	系列	无铅代码	终端	ECCN 代码	连接器类型	类型	定位的数量	最高工作温度	最小工作温度	颜色	性别	附加功能	HTS代码	子类别	MIL一致性	符合 DIN 标准	IEC一致性	过滤功能	混合接触	选项	螺距	触头总数	方向	深度	Reach合规守则	额定电流	触点表面处理	终端样式	接头数量	配套信息	触点性别	房屋颜色	空壳		线规	弱电	镀层	连接器支持类型	线规（最大值）	线规（最小值）	本体镀层	配件类型	导线/电缆规格	可密封	端子和接线板类型	绝缘直径	绝缘材料	端子类型	产品类别	导线/电缆直径	导线截面	螺杆/标签尺寸	进线数	外径	配接片宽度	绝缘电线支架	重担沉重	终端性别	螺柱直径	政府合资格	孔的数量	螺柱尺寸	总长度	产品	安装角	特征	产品类别
323868	TE Connectivity	数据表	500 In Stock	-	最小起订量: 1 最小包装量: 1	17 Weeks, 5 Days	Tin	Copper	Copper		323868	有	活跃	TE CONNECTIVITY LTD	2.27	(3/0) AWG	0.846575 oz	50	3/0 AWG	TE Connectivity	SOLISTRAND	Details	Not Insulated	14.36 mm	AMP						Bulk	SOLISTRAND	有		EAR99		环形舌片端子							8536.90.40.00	Terminals											compliant										0 AWG		Tin								环形端子		Not Insulated		Terminals		96.3 mm2	6.35 mm						FEMALE				6 mm		螺丝端子			Terminals		53.64 mm
30015	TE Connectivity	数据表	N/A	-	最小起订量: 1 最小包装量: 1			30015	活跃	3M ELECTRONIC PRODUCTS DIVISION	5.28													EAR99									8536.90.40.00												unknown										6 AWG										环形端子
31430	TE Connectivity	数据表	20000 In Stock	-	最小起订量: 1 最小包装量: 1	11 Weeks	Production (Last Updated: 3 days ago)	Tin	自由悬挂	Copper	Copper	Compliant	Uninsulated	-	0.004515 oz	1000	Screw	22 AWG	TE Connectivity	SOLISTRAND	Not Insulated	-	AMP						31430	有	活跃	TE CONNECTIVITY LTD	ROHS COMPLIANT	1.12	31430	26 to 22, 26 AWG	5.16(mm)	无	910 µm	Copper	Box	Budget		Crimp	EAR99		环形舌片端子				不需要	-		8536.90.40.00	Terminals									Straight	5.16 mm	compliant	-		Crimp			-			ACTIVE (Last Updated: 3 days ago)	22 AWG	Compliant	Tin		26 AWG	22 AWG	Tin		22 AWG	无	环形端子		Non-Insulated		Terminals		0.4 mm2	# 6				无	无		3.5052 mm	无	1	3.5 mm	11.43mm	螺丝端子	Straight		Terminals		11.43 mm		11.43(mm)		11.43 mm	5.15 mm		457.2 µm		508 µm	510 µm		无	Unknown	无铅
34135	TE Connectivity	数据表	40 In Stock	1: ¥9.873298 10: ¥9.314432 100: ¥8.787201 500: ¥8.289811 查看所有的价格 -	最小起订量: 1 最小包装量: 1	15 Weeks	Production (Last Updated: 6 days ago)	Tin	Copper	Copper	ACTIVE (Last Updated: 6 days ago)	300 V	AMP							34135	有	活跃	TE CONNECTIVITY LTD	2.23	34135	12 to 10, 12 AWG	无	300 VAC	0.251503 oz	500	Copper	10 AWG	TE Connectivity	PLASTI-GRIP	Details	Bulk	PLASTI-GRIP	有	Crimp	EAR99		接线端子				Yellow	Female		8536.90.40.00	Terminals									Straight		compliant									Vinyl	10 AWG		Tin		12 AWG	10 AWG	Tin		-10 AWG	无	线端子	5.08 mm	Polyvinyl Chloride		Terminals				2				无			无				Splices			Terminals		21.41 mm		21.41(mm)	5.08 mm	21.41 mm								无		无铅
36909	TE Connectivity	数据表	10 In Stock	1: ¥56.309349 10: ¥53.122027 100: ¥50.115121 500: ¥47.278415 查看所有的价格 -	最小起订量: 1 最小包装量: 1	15 Weeks	Production (Last Updated: 3 days ago)	Tin	Copper	Copper	Copper	3/0 AWG	TE Connectivity	SOLISTRAND	Not Insulated	-	AMP						36909	有	活跃	TE CONNECTIVITY LTD	1.09	(3/0) AWG	19.68(mm)	无	14.35 mm	Copper	ACTIVE (Last Updated: 3 days ago)	Compliant	-	0.776909 oz	50	Bulk	Solistrand		Crimp	EAR99		接线端子		170 °C		不需要	Female		8536.90.40.00	Terminals									Straight	19.68 mm	compliant	-		Crimp			-			-	(3/0)(AWG)		Tin				Tin			无	线端子		Non-Insulated		Terminals		85.05 mm2	-	2	19.685 mm		无	无	FEMALE		无			19.02mm	Splices	Straight		Terminals		19.02 mm	Parallel	19.02(mm)	19.69 mm	19.02 mm	-		2.39 mm		2.39 mm			无	无SVHC	无铅
36906	TE Connectivity	数据表	4725 In Stock	-	最小起订量: 1 最小包装量: 1	14 Weeks	Production (Last Updated: 4 days ago)	Tin	Copper	Copper	100	Cable Mount / Free Hanging	8 AWG	TE Connectivity	SOLISTRAND	Not Insulated	-	Uninsulated	AMP							36906	有	活跃	TE CONNECTIVITY LTD	1.65	8 AWG	7.52(mm)	无	4.37 mm	Copper	ACTIVE (Last Updated: 4 days ago)	Compliant	-	Bulk	SOLISTRAND	有	Crimp	EAR99		接线端子		170 °C		不需要	Female		8536.90.40.00	Terminals									Straight	7.52 mm	compliant	-		Crimp			-			0.163036 oz	8 AWG	Compliant	Tin				Tin		8 AWG	无	线端子		Non-Insulated		Terminals	10.5 mm	10.5 mm2	-	2	7.52 mm		无	无	FEMALE		无			21.01mm	Splices	Straight		Terminals		21.01 mm	Butt	21.01(mm)	7.52 mm	21.01 mm	-		1.22 mm		1.2954 mm			无	无SVHC	不适用
322454-2	TE Connectivity	数据表	877 In Stock	1: ¥8.413716 10: ¥7.937465 100: ¥7.488182 500: ¥7.064315 查看所有的价格 -	最小起订量: 1 最小包装量: 1	10 Weeks, 2 Days	-	Copper						322454-2	有	活跃	TE CONNECTIVITY LTD	2.29	-	500	Screw	Copper	10 AWG	TE Connectivity	SOLISTRAND	Details	Not Insulated	-	AMP			Bulk	SOLISTRAND	有		EAR99		Ring				-	-		8536.90.40.00	Terminals											compliant	-		Crimp			-				10 AWG										环形端子		Not Insulated		Terminals		6.64 mm2	# 8												螺丝端子	Straight		Terminals						17.98 mm	7.92 mm
321051	TE Connectivity	数据表	10 In Stock	1: ¥45.549559 10: ¥42.971282 100: ¥40.538945 500: ¥38.244288 查看所有的价格 -	最小起订量: 1 最小包装量: 1	17 Weeks, 5 Days	Production (Last Updated: 6 days ago)	Tin	自由悬挂	Copper	Copper	100	Screw	Copper	8 AWG	TE Connectivity	SOLISTRAND	Details	Not Insulated	-	4.57 mm	ACTIVE (Last Updated: 6 days ago)	AMP						1.66	TE CONNECTIVITY LTD	活跃	有	321051	8 AWG	12.7(mm)	无		EAR99	无	-	Box	SOLISTRAND	有	Crimp	EAR99		Flag Terminal		170 °C		不需要	-		8536.90.40.00	Terminals									直角	12.7 mm	compliant	-		Crimp			-			0.129526 oz	8 AWG	Compliant	Tin				Tin		8 AWG	无	环形端子		Non-Insulated		Terminals		10.5 mm2	# 10				无	无	FEMALE	5 mm	无	1	4.82 mm		螺丝端子	Straight		Terminals		20.09 mm		20.09(mm)		20.09 mm	12.7 mm		990.6 µm		1.0922 mm	1.09 mm		无	无SVHC	不适用
321060	TE Connectivity	数据表	47 In Stock	-	最小起订量: 1 最小包装量: 1	18 Weeks	Production (Last Updated: 2 years ago)	Tin	自由悬挂	Copper	Copper	Copper	4 AWG	TE Connectivity	SOLISTRAND	Details	Not Insulated	-	7.11 mm	ACTIVE (Last Updated: 2 years ago)	AMP						321060	有	活跃	TE CONNECTIVITY LTD	ROHS COMPLIANT	1.09	321060	4 AWG	17.32(mm)	无	-	0.251644 oz	100	Box	SOLISTRAND		Circular	EAR99		环形舌片端子		170 °C		不需要	-		8536.90.40.00	Terminals									直角	17.32 mm	compliant	-		Crimp			-			Screw	4 AWG	Compliant	Tin				Tin		4 AWG	无	环形端子		Non-Insulated		Terminals		21 mm2	7.93 mm				无	无	FEMALE	8.3312 mm	无	1	8 mm		螺丝端子	Straight		Terminals		32.46 mm		32.46(mm)		32.46 mm	17.32 mm		1.2192 mm		1.2954 mm	1.3 mm		无		无铅
321580	TE Connectivity	数据表	5 In Stock	1: ¥75.339516 10: ¥71.075014 100: ¥67.051901 500: ¥63.256510 查看所有的价格 -	最小起订量: 1 最小包装量: 1	13 Weeks	Tin	Copper	Copper	Details	Not Insulated	-	AMP								321580	有	活跃	TE CONNECTIVITY LTD	1.69	(1/0) AWG	22.23(mm)	无	-	1 oz	50	Screw	Copper	1/0 AWG	TE Connectivity	Bulk	SOLISTRAND	有		EAR99		Flag Terminal				不需要	-		8536.90.40.00	Terminals											compliant	-		Crimp			-			SOLISTRAND	0 AWG		Tin				Tin				环形端子		Non-Insulated		Terminals		60.6 mm2	7.93 mm						FEMALE				8 mm		螺丝端子	Straight		Terminals		44.02 mm		44.02(mm)		44.02 mm	22.23 mm
323062	TE Connectivity	数据表	4765 In Stock	-	最小起订量: 1 最小包装量: 1	11 Weeks	Nickel	Copper	Copper	TE Connectivity	SOLISTRAND	Details	Not Insulated	-	AMP								323062	有	活跃	TE CONNECTIVITY LTD	0.62	12 to 10, 12 AWG	9.53(mm)	无	Copper	Uninsulated	-	0.050442 oz	500	Screw	Bulk	STRATO-THERM	有		EAR99		环形舌片端子				不需要	-		8536.90.40.00	Terminals											compliant	-		Crimp			-			10 AWG	10 AWG		Nickel				Nickel				环形端子		Non-Insulated		Terminals		6.64 mm2	# 10						FEMALE				4.82 mm	19.43mm	螺丝端子	Straight		Terminals		19.43 mm		19.43(mm)		19.43 mm	9.53 mm		0.99mm
322365	TE Connectivity	数据表	92 In Stock	1: ¥19.703920 10: ¥18.588603 100: ¥17.536416 500: ¥16.543791 查看所有的价格 -	最小起订量: 1 最小包装量: 1	12 Weeks	Production (Last Updated: 1 week ago)	Nickel	自由悬挂	Copper	Copper	-	AMP						322365	有	活跃	TE CONNECTIVITY LTD	1.7	22 to 16, 22 AWG	7.14(mm)	无	-	0.030971 oz	1000	Screw	Copper	16 AWG	TE Connectivity	DIAMOND GRIP	Details	Bulk	STRATO-THERM	有	Circular	EAR99		环形舌片端子				不需要	-		8536.90.40.00	Terminals									Straight	7.14 mm	compliant	-		Crimp			-			Not Insulated	16 AWG	Compliant	Nickel		22 AWG	16 AWG	Nickel			无	环形端子	3.556 mm	Non-Insulated		Terminals	3.56 mm	1.65 mm2	# 8				有	无	FEMALE	4.34 mm	无	1	4 mm		螺丝端子	Straight	高温	Terminals		19.02 mm		19.02(mm)		19.02 mm	7.14 mm		787.4 µm			840 µm		无		不适用
320263	TE Connectivity	数据表	N/A	-	最小起订量: 1 最小包装量: 1	18 Weeks	Tin	Copper	Copper								320263	有	活跃	TE CONNECTIVITY LTD	1.72	320263	16 to 14, 16 AWG	8.71(mm)	无	600 VAC	0.006526 oz	1000	14 AWG	TE Connectivity	PLASTI-GRIP	Details	Vinyl	Bulk	PLASTI-GRIP	有		EAR99		环形舌片端子				Blue			8536.90.40.00	Terminals											compliant									AMP	14 AWG		Tin				Tin				钩形端子		Vinyl		Terminals		2.62 mm2	# 8										4 mm		螺丝端子			Terminals				22.12(mm)
321869	TE Connectivity	数据表	873 In Stock	-	最小起订量: 1 最小包装量: 1	14 Weeks	Tin	Copper	Copper								321869	有	活跃	TE CONNECTIVITY LTD	1.64	23.52(mm)	无	1.086791 oz	50	Screw	Copper	2/0 AWG	TE Connectivity	SOLISTRAND	Details	Not Insulated	12.8 mm	Bulk	SOLISTRAND	有		EAR99		环形舌片端子				不需要	Female		8536.90.40.00	Terminals											compliant			Crimp						AMP	0 AWG						Tin				环形端子		Non-Insulated		Terminals		76.3 mm2	6.35 mm						FEMALE				6.35(mm)		螺丝端子			Terminals				49.02(mm)
30694	TE Connectivity	数据表	500 In Stock	-	最小起订量: 1 最小包装量: 1	7 Weeks	Tin	Copper	Copper	Copper	16 AWG	TE Connectivity	SOLISTRAND	Details	Not Insulated	-	AMP								30694	有	活跃	TE CONNECTIVITY LTD	ROHS COMPLIANT	1.72	30694	22 to 16, 22 AWG	7.92(mm)	无	-	0.016685 oz	1000	Bulk	BUDGET	有		EAR99		环形舌片端子				不需要	-		8536.90.40.00	Terminals											compliant	-		Crimp			-			Screw	16 AWG						Tin				环形端子		Non-Insulated		Terminals		1.4 mm2	# 12										12 mm		螺丝端子	Straight		Terminals		15.77 mm		15.77(mm)		15.77 mm	7.92 mm
33639	TE Connectivity	数据表	134 In Stock	1: ¥40.400219 10: ¥38.113414 100: ¥35.956051 500: ¥33.920801 查看所有的价格 -	最小起订量: 1 最小包装量: 1	15 Weeks	Tin	Copper	Copper	Details	Not Insulated	-	AMP								33639	有	活跃	TE CONNECTIVITY LTD	2.28	33639	16 to 14, 16 AWG	13.49(mm)	无	-	500	Screw	Copper	14 AWG	TE Connectivity / AMP	Bulk	DIAMOND GRIP	有		EAR99		环形舌片端子				不需要	-		8536.90.40.00	Terminals											compliant	-		Crimp			-			DIAMOND GRIP	14 AWG		Tin				Tin				环形端子		Non-Insulated		Terminals		2.62 mm2	6.35 mm										6 mm		螺丝端子	Straight		Terminals				31.47(mm)		31.47 mm	13.49 mm
324082	TE Connectivity	数据表	100 In Stock	-	最小起订量: 1 最小包装量: 1	16 Weeks	Production (Last Updated: 1 week ago)	Tin	Copper	Polyamide (PA), Nylon	Copper						324082	有	活跃	TE CONNECTIVITY LTD	1.09	Copper	8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/8536904000/85	ACTIVE (Last Updated: 1 week ago)	Compliant	Nylon	Nylon (Polyamide)	-	0.110760 oz	100	Screw	8 AWG	TE Connectivity	-	Bulk	TERMINYL		Crimp	EAR99		Free Hanging (In-Line)				Red	Female		8536.90.40.00	Terminals									Straight	12.14 mm	compliant	-	Tin	Crimp			-			AMP	8 AWG	Compliant	Tin				Tin		8 AWG	无	环形端子	0.256 (6.50mm)	Insulated		Terminals		10.5 mm2	6.35 mm				有	无		6.35 mm	有	1	M6	36.2mm	螺丝端子	Straight	锯齿状端子	Terminals						36.2 mm	12.14 mm		1.016 mm			1.09 mm		无	Unknown	无铅
1-154719-0	TE Connectivity	数据表	11108 In Stock	1: ¥0.416116 10: ¥0.392563 100: ¥0.370341 500: ¥0.349379 查看所有的价格 -	最小起订量: 1 最小包装量: 1	11 Weeks	-	Polyamide (PA)	Polyamide 6/6	-	0.017637 oz	1500	In-Line	-	-	18 AWG	TE Connectivity / AMP	Details	Polyamide (PA)	-	AMP								1-154719-0	有	活跃	TE CONNECTIVITY LTD	1.64	Straight	Polyamide 66	1	24.26(mm)	Not Required(mm)	不需要 mm	Bag	250 FASTON					Housing				Natural	Receptacle			Terminals											compliant	-		Crimp	1 POS		Pin (Male)	Natural		AMP Positive Lock 250 Series Connectors	18 AWG			连接器附件				绝缘套管					Insulated		Terminals			6.35 mm												Accessories	Straight		Terminals		7.19 mm		7.19(mm)		24.26 mm	7.19 mm						9.83(mm)
1-321235-0	TE Connectivity	数据表	850 In Stock	-	最小起订量: 1 最小包装量: 1	12 Weeks	-	Brass	Brass	6.35 x 0.81mm	PVC (Polyvinylchloride)	-	0.057532 oz	1000	Cable Mount / Free Hanging	Brass	10 AWG	TE Connectivity	FASTON	Details	Vinyl	-	AMP								1-321235-0	有	活跃	TE CONNECTIVITY LTD	1.65	1-321235-0	22 to 10, 22 AWG	10.38(mm)	无	6.35mm	PACKAGE	250 FASTON	有		EAR99		接线端子				Natural	公对公		8536.90.40.00	Terminals											compliant	-		Crimp			-			Crimp	10 AWG						Tin				线端子		Polyvinyl Chloride		Terminals			-						FEMALE						Splices	Straight		Terminals		66.67 mm		66.67(mm)		66.7 mm	10.39 mm			0.81mm
1601140-1	TE Connectivity	数据表	850 In Stock	1: ¥1.260958 10: ¥1.189583 100: ¥1.122248 500: ¥1.058725 查看所有的价格 -	最小起订量: 1 最小包装量: 1	8 Weeks	Production (Last Updated: 6 days ago)	-	-	Brass	-	ACTIVE (Last Updated: 6 days ago)	AMP							1601140-1	有	活跃	TE CONNECTIVITY LTD	1.65	1601140	22 to 18, 22 AWG	无	-	0.004021 oz	30000	通孔	-	18 AWG	TE Connectivity / AMP	Details	卷带		有	IDC	EAR99		西阿美兹终端				-	-		8536.90.40.00	Terminals											compliant	-		IDC			-			Not Insulated	18 AWG	Compliant			22 AWG	18 AWG			-18 AWG		线端子		Not Insulated		Terminals		0.8 mm2	-												专用终端	Straight		Terminals		6.35 mm		6.35(mm)		6.35 mm	-									不适用
156503-2	TE Connectivity	数据表	N/A	-	最小起订量: 1 最小包装量: 1	7 Weeks	Brass						156503-2	有	活跃	TE CONNECTIVITY LTD	5.67	156503	11 to 10, 11 AWG	5.08 mm²	6.6(mm)	无	7000	TE Connectivity / AMP	FASTON	Details	AMP				Box	Fastin-Faston					快速断开终端				不需要	Receptacle			Terminals											compliant										10-11(AWG)		Tin	连接器附件			Tin						Non-Insulated		Terminals															快速断开			Terminals		19.18 mm		19.18(mm)
172133-5	TE Connectivity	数据表	N/A	-	最小起订量: 1 最小包装量: 1	20 Weeks, 5 Days	自由悬挂	CABLE	NYLON	Nylon	Nylon	有	Obsolete	TE CONNECTIVITY LTD	5.64	未说明	未说明	172133	Compliant								有	快速连接		组合管路连接器		4			Blue	Receptacle	COMPATIBLE CONTACTS: 170340; 170341; 170349			NO	NO	NO	NO	NO	GENERAL PURPOSE	9 mm	4	Straight		compliant					MULTIPLE MATING PARTS AVAILABLE	MALE	Blue	YES	172133-5		Compliant																																					22.5 mm
181949-2	TE Connectivity	数据表	68 In Stock	-	最小起订量: 1 最小包装量: 1	7 Weeks, 3 Days	Tin	Brass	Brass	Brass	5000	PCB	TE Connectivity / AMP	Details	Not Insulated	-	AMP							181949-2	有	活跃	TE CONNECTIVITY LTD	1.68	5.16 mm²	8(mm)	-30C to 110C	无	6.35mm	Solder	Brass	4mm	-	Bag	FASTON .250	有		EAR99		快速断开终端				不需要	Plug		8536.90.40.00	Terminals											compliant	-		Stud			-			0.033616 oz							Tin				标签终端		Non-Insulated		Terminals			6.35 mm x 0.81 mm						MALE					16.5mm	快速断开	45 deg		Terminals	Tin	16.5 mm		16.5(mm)		16.5 mm	8 mm			0.81mm
170021-2	TE Connectivity	数据表	1190 In Stock	-	最小起订量: 1 最小包装量: 1	3 Weeks, 6 Days	Tin	Brass	Brass								170021-2	有	活跃	TE CONNECTIVITY LTD	1.66	170021	20 to 14, 20 AWG	4.7(mm)	无	Uninsulated	Brass	0.021164 oz	1000	推入式	20 AWG	16 AWG	TE Connectivity / AMP	Bulk			Crimp			Shur-Plug				不需要	Receptacle			Terminals											compliant			Crimp						Details	14-20(AWG)		Tin	连接器附件			Tin						Insulated	Open Barrel Splice	Terminals			3.86 mm											18.5mm	筒形端子			Terminals		18.5 mm		18.5(mm)
180351-2	TE Connectivity	数据表	4458 In Stock	1: ¥1.008766 10: ¥0.951666 100: ¥0.897798 500: ¥0.846980 查看所有的价格 -	最小起订量: 1 最小包装量: 1	11 Weeks	Production (Last Updated: 3 days ago)	Tin	Brass	Brass	Brass	8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/8538907040/85	Brass	ACTIVE (Last Updated: 3 days ago)	Compliant	Crimp	Uninsulated	-	0.026314 oz	3000	-	9 AWG	TE Connectivity / AMP	FASTON	Not Insulated	-	AMP						180351-2	有	活跃	TE CONNECTIVITY LTD	1.65	12 to 10, 12 AWG	5.14 mm²	7.49(mm)	-40C to 110C	无	卷带	FASTIN-FASTON .250	有	Receptacle	EAR99		快速断开装置		105 °C	-30 °C	不需要	Receptacle		8536.90.40.00	Terminals									Straight	7.49 mm	compliant	-		Crimp			-			6.35 mm	10 AWG	Compliant	Tin		10 AWG	12 AWG	Pre-Tin		12 AWG	无	PUSH-ON TERMINAL	5.08 mm	Non-Insulated	Female Quick Disconnect	Terminals			6.35 mm x 0.81 mm			6.35 mm	有		FEMALE					21.3mm	快速断开	Straight		Terminals		19.05 mm		19.05(mm)		18.9992 mm	7.6 mm	800 nm		812.8 µm				无	无SVHC	不适用