自然冷却油浸式强制油循环：oil-immersed forced oil circulation with natural cooling 自然接地：natural grounding 自然混合气：hypergolic ignition; spontaneous ignition ..
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等电位联结也可不与人工或自然接地体连接的，成为不接地的等电位联结。
Equipotential connection may not connect with the manual or natural earthing to become earth-free equipotential connection.
如果我们能够运用自然的盈亏法则，我们就可以更简单直接地找到正确的答案。
Finding the right answers, however, is a process that would be much simpler and more straightforward if natural profit-and-loss mechanisms were allowed to operate.
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。
This paper analyzed the effect of shielding between hollow grounding devices and between hollow grounding device and ground grid.
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