金属底座 meaning in Chinese

metab
metal base

Valves for automotive tyres ; rim valves with metal base
机动车轮胎的气门.带金属底座的轮辋气门
Tube valves ; metal base valves for tubular tyres
内胎的气门.自行车单管轮胎用的带金属底座的气门
Metal box for mounting lighting switch or control switch not earthed
供安装灯掣或开关掣的金属底座并无接地。
Fix plastics base and metal base on the metope with st4 . 2 screws
用st4 . 2螺丝将塑料底座和金属底座一块固定在墙面上。
The result of the test , examination and probation shows that this new technology an enhance the homing precision and reduce the weight of gyroscope system by one fifth and the viewfinder maintains sound optics quality under bad conditions - no crack of glass and no distortion of metal base
检测、试验与试用表明，通过该工艺制造的提升镜，使制导陀螺系统重量减少五分之一，极大地提高了制导精度，且大面积反光镜在恶劣环境下光学质量完好，玻璃无破裂，金属底座不变形。