... 单孔铁心 single apertured core 多孔铁基体 porous iron matrix 多孔铁轴承 powdiron bearing ...
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Using a prefabricated porous ferroboron lump, a surface composite layer was made on gray cast iron matrix, with a common casting method.
通过预先制备带有孔隙的硼铁合金预制块，用普通浇注的方法，获得以灰铸铁为基的铸造表面复合材料。
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