1、
2、
There are three main types, toolmakers, rectangular section steel, and cast iron straight edges.
有三种主要的方式, 工具制造者, 矩形片钢, 铸铁直边.
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3、
Add to the mold, and cast from molten iron, then finished, to be the ideal product.
放入摸具中, 用铁水浇筑而成, 而后开展精抛光, 从而得到理想的商品.
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4、
The molding sand that there is pile in the housing of engine and cast core iron.
发动机的机壳里有大堆的型砂和铸造芯铁.
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