| 单词 | ball tap |
| 释义 | > as lemmasball tap ball tap n. = ballcock n. ΘΚΠ society > occupation and work > equipment > other specific types of equipment > [noun] > tap > types of washer1596 plug1707 ballcock1734 bib cock1797 draw-off1826 plug cock1826 screw tap1842 waste-cock1844 ball tap1849 self-tapping1878 mixing valve1902 mixer tap1936 combination tap1951 mixer1973 1849 Mechanics' Mag. 51 291/1 An advantage is found also in a self-acting ball-tap, in preventing any concussion from the stoppage of water on suddenly turning a tap under very high pressure. 1925 A. Bennett Clayhanger Family ii. iv. 173 This cistern, by means of a ball-tap, filled itself from the main nearly as quickly as it was emptied. 1988 Tasmanian Country (Nexis) 30 Sept. In the past, cattle have been able to knock the ball tap with their heads, which would result in the tank overflowing. < as lemmas |
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