球形旋塞 的英文怎麼說
中文拼音 [qiúxíngxuánsè]
球形旋塞
英文
ball cock-
Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
建築物氣體裝置用手工操作的球閥和封閉底錐形旋塞閥Laboratory glassware ; tightness test of conical joints, spherical joints and stopcocks
實驗室玻璃儀器.球形介面和旋塞的螺旋連接的密封性檢
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