Do not put battery at machine impactive places, and poke battery with hard things.
不可将电池置于强机械冲击的场所, 也不可用硬物击穿电池.
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New idea to control welding residual stress and distortion with trailing impactive electromagnetic force was given.
提出了基于脉冲电磁力随焊控制焊接应力及变形新方法.
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