sealed spring loaded safety valve

1 2 3 4 5 ... 封闭放射源^ sealed source 封闭式弹簧安全阀^ sealed spring loaded safety valve 密封式电动机^ sealed-in motor ...

化工和机械英文字典 - -... ... 经培训的人员 trained personnel 经铅封的弹簧式安全阀 sealed spring loaded safety valve ...