针对铸件机械加工时，铸件粗基准的确定和基准目标系统的建立进行了阐述，并得出了铸件粗基准的一些确定原则。
The determining of casting rough reference and establishing of reference target system are introduced from which the determining principle of casting rough reference is obtained.
针对铸件机械加工时，铸件粗基准的确定和基准目标系统的建立进行了阐述，并得出了铸件粗基准的一些确定原则。
The determining of casting rough reference and establishing of reference target system are introduced from which the determining principle of casting rough reference is obtained.
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