| 单词 | pump valve |
| 释义 | > as lemmaspump valve pump valve n. ΚΠ 1828 Times 24 Nov. 4/5 (advt.) A superior single-lifting Engine..with copper casings, pump valves, &c. 1844 Civil Engineer & Architect's Jrnl. 7 190/2 A model, showing the principal pump valves used by mining engineers. 1858 P. L. Simmonds Dict. Trade Products Pump-valve, the moveable interior part or lid of a pump. 1939 Sci. Monthly Nov. 462/2 The pump valve designs are quite satisfactory for modern use. 1994 Waterways World May 68/1 The problems of choked strainers, overloaded mud-boxes and stuck pump valves, not to mention consequential engine damage. < as lemmas |
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