In the accelerating field, every unit adjusts its current by electric field strength, the total current remaining constant.
在加速场区，各单元按场强调整电流值，但电流总量不变。
In the accelerating field, every unit adjusts its current by electric field strength, the total current remaining constant.
在加速场区，各单元按场强调整电流值，但电流总量不变。
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