As one of the gray cast iron, boron gray cast iron is widely used in the department including automobile industry, mechanism industry and construction industry, etc.
硼灰铸铁作为灰铸铁的一种，广泛应用在汽车工业、机械工业、建筑工业等部门。
Letter the Department of Public Works cut iron ore importers should be quality control in the 5-10.
工信部应当大幅削减铁矿石进口商资质，控制在5到10家。
As an important engineering material, nodular cast iron is widely used in each department of national economy.
作为一种重要的工程材料，球墨铸铁广泛应用于国民经济各部门。
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