| 释义 |
pet-cock
[app. f. pet n.1 or ? n.3 + cock n.1 12.]
A small plug-cock fastened in a pipe or cylinder, as in a pump or a steam-engine, for purposes of draining or testing.
1864in Webster. 1875in Knight Dict. Mech. 1672/2. 1888 Hasluck Model Engin. Handybk. (1900) 107 The pet-cock often fixed to a feed pump barrel is used to test the action of the pump (to see whether it is drawing water), and to draw off confined steam or air. |