| 单词 | pump head |
| 释义 | > as lemmaspump head pump head n. (a) the head of a pump, at which the liquid that has been lifted emerges; (b) a hood at the head of a chain-pump for catching water that might otherwise be thrown off. ΚΠ 1633 tr. Math. Recreations cxii. 249 Let the sucker of the Pumpe which is made, be just for the Case or Pumpes head. 1758 J. N. Stevens Treat. Medicinal Qualities Bath Waters xii The Nature and Qualities of these Waters I have discovered from Experiments made at the Pump-head. 1875 E. H. Knight Amer. Mech. Dict. III. 1829/1 Pump-head, an arrangement for causing all the water raised by a chain-pump to be directed into the discharge-spout instead of permitting a part to be thrown off by centrifugal force. 1960 Dict. Mech. Engin. (ed. 8) ii. 270 Pump head, a sheet iron hood placed at the top of a chain pump to prevent any of the discharge water being thrown off by centrifugal force. 1983 New Scientist (BNC) 10 Mar. With most handpump maintenance, workers need a rig to lift the pump head off its base. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。