常見例句The coatings composed by the chosen refractory is crackfree in high temperature.The castings using the coatings is free of surface defect and the surface roughness can reach 18 - S. 根據(jù)此法選出的耐火材料所組成的塗料在高溫急熱時不開裂，澆注出的鑄件表麪無缺陷，表麪粗糙度達(dá)18-S。 返回 crackfree