英语词汇“gas tracer”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	gas tracer
释义	gas tracer gas tracer [¦gas ′trā·sər] (mining engineering) Dust clouds, chemical smoke, or gaseous or radioactive tracers used to detect slowly moving air currents in a mine.
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