| 1. | A fluctuating magnetic field is produced in the iron .
铁心中就产生交变磁场。 |
| 2. | 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。 |
| 3. | 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。 |
| 4. | 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。 |
| 5. | 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。 |
| 6. | 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。 |
| 7. | Moisture - heat performance alternating test 55
4湿热性能交变试验55 |
| 8. | Tangential keys and tangential keyways for alternating shock loads
交变冲击负荷用切向键与切向键槽 |
| 9. | Alternating temperature humidity test chamber
交变湿热试验箱 |
| 10. | Alternating current response of nonlinear electrorheological fluids
电流变液体的非线性的交变电流效应 |
