久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

“粉化的”的英語(yǔ)可以翻譯為：[機(jī)] atomizing ...

分析了白色丙烯酸 - 聚氨酯汽車(chē)面漆粉化的原因,并提出了防止粉化的措施.Powdering of white acrylic acid - polyUrethane automobile painting was described. Measures were proposed to prevent powdering....