pneumatic trough

名词 n.
中文释义

英文释义

名词 n.
  1. A piece of laboratory apparatus, consisting of a vessel filled with liquid (generally water or mercury), used for collecting gases.
    — The pneumatic trough used at Calne was larger than that he had used in Leeds, and fresh water was not so conveniently at hand.

词形变化

pneumatic troughs plural
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