Its shielded box should be used the main air gap and prevent the primary current to produce the magnetic field concentrating in the shield shell metal plate.
其屏蔽盒应用主气隙，防止原电流产生的磁场集中在屏蔽壳的金属板内。
The photodiode is placed in an electrically shielded dark box.
该光电二极管安放在一个电屏蔽的暗箱中。
The photodiode is placed in an electrically shielded dark box.
该光电二极管安放在一个电屏蔽的暗箱中。
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