英语词汇“scum-cock”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

单词	scum-cock
释义	> as lemmas scum-cock scum-cock n. a cock in a steam-boiler for the removal of surface scum from the water without loss of pressure. ΚΠ 1888 Lockwood's Dict. Mech. Engin. Scum Cock, a cock placed in the side of a marine boiler for the purpose of getting rid of the dirt and scum which are carried to the surface of the water. 1891 W. S. Hutton Steam-boiler Constr. 318 When a scum-cock..is employed it is to blow off scum from the surface of the water in a steam-boiler. extracted from scumn. < as lemmas
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> as lemmas