| 1. | Hard water furs the kettle .
硬水使水壶生水垢。 |
| 2. | Hard water which can be softened by adding sodium carbonate is called permanent hard water .
经过加入碳酸钠能被软化的硬水，称为永硬水。 |
| 3. | Standard termninology relating to hydraulic cement
水硬水泥相关的标准术语 |
| 4. | Study on softening of hard water by 13x - zeolite
沸石用于硬水软化的研究 |
| 5. | Standard test method for flow of hydraulic cement mortar
水硬水泥灰浆流动性的标准试验方法 |
| 6. | Household electrical appliances - performance - hard water testing
家用电器.性能.硬水试验 |
| 7. | Surface active agents - determination of stability in hard water
表面活性剂.硬水中适应性测定 |
| 8. | The building is made of hydraulic cement
大楼是用水硬水泥建造的。 |
| 9. | Household electrical appliances - performance - hard water for testing
家用电器.性能.硬水试验 |
| 10. | Standard test methods for chemical analysis of hydraulic cement
水硬水泥化学分析的标准试验方法 |
