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petcock

n. 小活栓；小龙头；扭塞

1、小旋塞

... pestilence时疫 petcock小旋塞减压开关排泄开关 petcock小旋塞减压开关排泄开关 ...

2、排泄阀

... petroleumwax石蜡 petcock排泄阀 Pexol强化松香胶美国Hercules 产品，商业名称 ...

3、[铁路]小型旋塞

... Petasus瓣石 petcock手压开关；减压开关；排泄开关；小型旋塞；油门 peteringout尖灭 ...

petcock socket小型旋塞座

petcock k小活栓

feed pump petcock添水泵小型旋塞

bilge pump petcock舱底泵小塞门

bilge e pump petcock舱底泵小塞门

能源科学技术

n.regulator consisting of a small cock or faucet or valve for letting out air or releasing compression or draining

1.
N（名词） a small valve for checking the water level in a steam boiler or draining condensed steam from the cylinder of a steam engine (蒸汽锅炉内检查水位的)小旋塞; (蒸汽机汽缸的)泄气阀

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