A fluctuating magnetic field is produced in the iron . 铁心中就产生交变磁场。
Many life processes involve alternating voltages and currents . 许多生命过程涉及到交变电压和交变电流。
So far we have described the propagation of alternating magnetic fields . 至此我们讨论了交变磁场的传播。
The measurement of alternating potential difference may be perturbed by stray current . 交变电位差的测量可能受到游散电流的影响。
The alternate system allows signal installations along a given length of road to show contrary indications . 交变系统,使一段给定路段上的信号器,展现相反的指示。
The alteration can be created by moving the charges region or probe, or by placing a chopper either before or after the probe . 交变作用可以由带电区域或探针运动而形成,也可以在探针前面或后面,安装一断续器产生交变作用。
Moisture - heat performance alternating test 55 4湿热性能交变试验55
Tangential keys and tangential keyways for alternating shock loads 交变冲击负荷用切向键与切向键槽
Alternating temperature humidity test chamber 交变湿热试验箱
Alternating current response of nonlinear electrorheological fluids 电流变液体的非线性的交变电流效应