英语词汇“pneumatic trough”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	pneumatic trough
释义	Word Frequency pneumatic trough noun chemistry a shallow dishlike vessel filled with a liquid, usually water, and used in collecting gases by displacement of liquid from a filled jar held with its open end under the surface of the liquid
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