| 单词 | water seal |
| 释义 | > as lemmaswater seal water seal n. a seal that uses water to prevent the escape of gas or liquid; spec. = trap n.1 8a. ΘΚΠ the world > space > relative position > closed or shut condition > that which or one who closes or shuts > [noun] > that which closes an aperture > means of preventing passage of gas or liquid register1612 water seal1847 water lock1863 seala1884 1847 J. Battin U.S. Patent 5,295 1/1 Which instrument I denominate a ‘Water Seal’, or ‘Hydrostatic Gas-Trap’. 1884 Cent. Mag. Dec. 259/1 The trap..depends for its efficiency on the permanence of its water-seal. 2004 P. Hymers New Home Builder xi. 225 To stop the water seals being broken (pulled out) by the air pressures that can exist in the system, maximum lengths apply. < as lemmas |
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