| 单词 | gas check |
| 释义 | > as lemmasgas check gas check n. Firearms and Gunnery a sealing device to prevent escape of combustion gases around or behind the bullet in firing a gun; esp. a thin cap or cup fitted to the base of a cartridge, used to reduce deposition of lead in the barrel and improve performance; cf. obturator n. 3b. ΘΚΠ society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > parts and fittings of firearms > [noun] > breech > part to prevent escape of gas gas check1856 Broadwell ring1867 gas ring1880 1856 U.S. Patent 14,253 1/1 Fig. 3, a view of the top part when open and showing the entrance to the chamber round which the thin flexible gas-check is fixed. 1901 Jrnl. Soc. Arts 49 274/2 A certain increase in the life of a gun can be gained by using an efficient gas check. 2006 W. van Zwoll Hunter's Guide Long-range Shooting vi. 233 A gas check lets you wring 2,000 fps from most bullets without compromising accuracy. < as lemmas |
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