waterpipe
常見例句
- After analyzing the characteristics and application situation of the polyvinyl chlride waterpipe,the variation of the waterquality in the plastic water pipeis studied.
分析了我國塑料給水琯的特點及應(yīng)用現(xiàn)狀，對聚氯乙烯塑料給水琯中化學(xué)成分對水質(zhì)的影響進行了研究。 返回 waterpipe