单词 | gate-valve |
释义 | > as lemmasgate-valve gate-valve n. a valve in which a sliding part controls the extent of the aperture. ΚΠ a1884 E. H. Knight Pract. Dict. Mech. Suppl. 394/2 Jenkin's gate valve has a disk of compressible packing held to its seat by a wedge-shaped follower. 1958 Engineering 11 Apr. 469/1 Hydraulically-actuated wedge gate valves..have successfully met the rigorous specification. < as lemmas |
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