Gray cast iron is a common material for the part of the agricultural machinery.

灰铁为农机零件常用材料，磨损是灰铁零件最常见的失效形式。

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Gray cast iron is a common material for the part of the agricultural machinery.

灰铁为农机零件常用材料，磨损是灰铁零件最常见的失效形式。

youdao