永久铸模 meaning in English

permanent mold
permanent mould

Standard specification for magnesium - alloy permanent mold castings
镁合金永久铸模铸件标准规范
Standard specification for statically cast permanent mold gray iron castings
静铸永久铸模灰铁铸件标准规范
Standard specification for copper alloy permanent mold castings for general applications
通用铜合金永久铸模铸件的标准规范
Semi - permanent mold
半永久铸模