pet cock 小旋塞 ; 油门 ; 小龙头 ; 小塞门
blowoff pet cock 排风栓
cylinder pet cock 汽缸螺塞
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同义词: petcock
以上来源于: WordNet
N 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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