短语词组短语mold and core sand 型芯砂mold and core drying 砂型和型芯烘干mold or core 铸型shell mold and core 壳型壳芯mold and core 范和芯cluster bottom mold runner core 浇道砖Japanese mold core reflector 翻译公司模芯反光片 返回 mold core