英语词汇“bell-jar testing”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	bell-jar testing
释义	bell-jar testing bell-jar testing [′bel ‚jär ‚tes·tiŋ] (engineering) A leak testing method in which a vessel is filled with tracer gas and placed in a vacuum chamber; leaks are evidenced by gas drawn into the vacuum chamber.
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