If a leak is suspected in any part of a system, a hydrogen flame can be detected by cautiously approaching with an out-stretched broom, lifting it up and down.
英
美
释义
如果系统的任何部分被怀疑泄漏,可以这样探测氢火焰:把扫帚上下晃动,谨慎的接近泄漏点。
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