磁感线的方向。直线电流的安培定则是基本的，环形电流的安培定则可由直线电流的安培定则导出直线电流的安培定则对电荷作直线运动产生的磁场也适用，这时电流方向与正电荷运动方向相同，与负电荷运动方向相反。
PFG-211/DRO齿轮泵
POX-245 31齿轮泵
POX-349 40齿轮泵
HQ-012 52叠加阀 HM
HQ-012/G 54叠加阀 ，BS22040b，BM32031a，BS32031a，BM32041a，BS32041a，AM32061a，AS32061a，AM32101a，BM32030b，BS32030b，BM32040b，BS32040b，BM3403，BS3403，BM3404，BS3404，AM3406，AS3406，AM3410，AS3410，BH2206LA，AS430B-G24,AM32061A-R230,AM32061A-G24,AM32060B-G24,AM32060B-R230,AM32101A-G24,AM32100B-G24,AM32101A-R230,AM32100B-
HQ-013 52叠加阀
HQ-014 52叠加阀
HQ-022 52叠加阀GR2-1110VAC
G3-1-G24-AT
GR2-3-H-G24
GR2-4-1-G24
GZ3-1R-G110
GR3-1RA110V
WGR2-2-WG24
WG3-2-WG230
WGZ3-1-WG24
WG21-1-WG24
WG3-1-WG230
WGS2-0-WG24
WGR2-1-WG24
WG22-2-WG24
WG4-1-WG230
WG21-0-WG24
WGR2-3-WG24
GN24
GZ3-1-G24-AT
GR2-0-G24-AT
GR2-2-G24-AT
G21-1-G24-AT
GG24
GS2-2-G24-AT
WG21-1-WG230
WGR2-3-WG200
WG22-1-WG230
WGS2-1-WG230
WGR2-1-WG110
WGZ4-1-WG110
ATOS DHDC24V
ATOS DHDC24V
ATOS E-ME-AC-05F
ATOS DHDC24V
ATOS DHDC24V
ATOS DK1-
ATOS DKUDC T-105-E-6
ATOS DLOH-3C-U 16 24DC T-50-H-4
ATOS DPZ0-A-251-L5 30
CG2V-6FW-10
ATOS AGAMnbsp;
ATOS PFG-327/D
ATOS DH-0141
ATOS HM
ATOS HG
ATOS HR-