While DC power transmission requires high anti-fouling property for insulators and causes serious corrosion to their metal attachments (iron cap and steel foot).

但直流输电对绝缘子的防污秽性能要求高，对其金属附件(铁帽和钢脚)腐蚀厉害。

youdao

The submersible motor enclosure including frame, end brackets, flanges and cap assembly shall be constructed of close-grained cast iron, ASTM A-48, Class 30 or better.

潜水电机壳体，包括机架，尾轴承架，法兰和罩盖总装，必须采用符合美国材料试验协会ASTM A - 48类别30标准的、密实的铸铁或更好的材料制造。

youdao

This company produces engineering machinery, automobile, engine, cast iron pipe and so on casting. Produc demonstration: clamp, planet Rack, Support, bearing cap, cast iron pipe, Products and so on.

本公司专业生产工程机械、汽车、发动机及排污管等铸件。产品展示：夹钳、行星轮架、差速器壳、支架、轴承盖、铸铁管等产品。

youdao