... 水硬度 water hardness 试水纸 water indicating paper 水套 water jacket ...
基于1个网页-相关网页
water-indicating paper 试水纸
The paper describe the serious of water pollution of Three Gorges reservoir area, indicating the importance of gross control and the pressing of synthetic prevention.
通过对三峡库区水污染严重性的综述，说明水资源总量控制的重要性和综合防治水污染的紧迫性。
youdao
应用推荐
模块上移
模块下移
不移动