| 单词 | needle gate |
| 释义 | > as lemmasneedle gate needle gate n. rare a dam or weir consisting of narrow spars placed vertically side by side in a movable frame. ΘΚΠ the world > the earth > water > lake > pool > [noun] > artificially confined water > contrivance for impounding water > dam > types of mill-dam1182 warrant1406 pond head1465 coffer-dam1736 batardeau1767 gather-dam1768 frame dam1774 crib-dam1816 shutter-dama1884 suddc1900 needle gate1909 check-dam1936 gravity dam1940 1909 H. M. Wilson Irrigation Engin. (ed. 6) 230 Simple flash-board or needle gates should be used only where the pressure upon them is low. < as lemmas |
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