| 1. | It is difficult to pinpoint when water problems of the modern age began .
很难准确地指出，现代用水的问题是什么时候出现的。 |
| 2. | Classification of water used in milling of porcelain enamel
搪瓷研磨用水的分类 |
| 3. | Here ' s your daily drought reminder to conserve agua
这里是节约用水的每日干旱提醒 |
| 4. | Here ' s your daily drought reminder to conserve agua
这里是节约用水的每日干旱提醒 |
| 5. | Theory and calculation method of ecological water use
生态用水的基本理论与计算方法 |
| 6. | Testing method for corrosivity of industrial water
工业用水的腐蚀性试验方法 |
| 7. | Study of the impact of ground water on crop growing
期间北京市农业高效用水的发展研究 |
| 8. | A discussion on ecological water in northwest area
西北地区生态用水的探讨 |
| 9. | 5 a water supply system for the plant
5供全厂用水的供水系统。 |
| 10. | Standard guide for testing industrial water - reducible coatings
检验工业用水的标准指南.可还原涂层 |
