water swivel meaning in Chinese

水旋转接头
旋环
循环钻液转座

Probing into improvement of water swivel of model 150 hydraulic drilling machine
150钻机水辫轴改进的探讨
Diamond press machine , synthetic diamond and its products various pressure containers other produts sucker rods , various derricks , drilling tools , hydraulic jacks , water swivels , hydraulic breakout tools , hydraulic pumping units and so on
该厂的主要产品有：地质岩芯钻机工程施工钻机水文水井钻机汽车钻机钻塔泥浆泵金刚石压机人造金刚石及制品液动螺杆钻泵井壁管和抽油杆以及一