The metal shielding grid for avoiding the electromagnetic interference is designed.
防电磁干扰应安装金属网格屏蔽。
This paper analyzed the effect of shielding between hollow grounding devices and between hollow grounding device and ground grid.
并通过模拟试验分析了接地坑、自然水对降低空腹式接地装置的接地电阻的作用。
Even if we used grid electricity to cut off the permanent magnet's field by shielding it with something, wouldn't we save a lot more energy than using an electromagnet?
即使我们使用电网电力切断屏蔽的东西它的永久磁铁的领域，我们不会节省很多比用电磁铁的能量？
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