常見例句雙語例句The elimination of surface defects has indicated that proper selection of sand properties are important to improve the surface quality of gray iron cylinder block and head castings.實踐結果表明型砂性能對于鑄件表面質量有著重要的影響，選擇合適的型砂性能能夠顯著提高鑄件表面質量。 返回 block elimination