four-way cock

短语

[化] 四通栓塞; 四通考克

词形变化

four-way cocks 复数 four-way cocks

释义与例句

n.
  1. 1.

    A cock connected with four pipes or ports, and having two or more passages in the plug, by which the adjacent pipes or ports may be made to communicate; formerly used as a valve in the steam engine, and for various other purposes.

    工程

    the chamber of the four-way cock