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因此球墨铸铁阀门能够方便的替换铸铁或钢阀门。
Thus Ductile iron valves can easily replace cast iron or steel valves.
youdao
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这种阀门应该是黄铜阀体，不锈钢阀杆和弹簧。
Valve shall have a brass body and stainless steel stem and spring.
youdao
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这种阀门应该是黄铜阀体，不锈钢阀杆和弹簧。
Valve shall have a brass body and stainless steel stem and spring.
youdao