union screw 中文意思是什麼
union screw
解釋
對動螺旋-
Compression couplings with olives ; hollow screw fittings and ring connection fittings for use with union nuts
橄欖形壓緊聯接器.與管接頭配用的空心螺釘管接頭和環 -
Methods 46 patiente was treated with pedical screw, lamina hook, bone - planted in the isthmic, with follow - up after operation, and investigate the spondylolysis union, the improvment of symptom and the ability recovery of work and motion
方法46例單純峽部不連病人,採用椎弓根螺釘、椎板鉤加峽部植骨固定治療,術后進行隨訪,探討此手術方式的峽部不連愈合及病人癥狀改善情況。 -
Shipbuilding - bronze 5k screw - down check globe valves union bonnet type
造船.青銅制5k螺旋擰緊止回球閥 -
Shipbuilding - bronze 5k screw - down check angle valves union bonnet type
造船.青銅制5k螺旋擰緊止回角閥
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