常见例句用作名詞 (n.)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用現狀，對聚氯乙烯塑料給水琯中化學成分對水質的影響進行了研究。 返回 waterpipe