| 1. | 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。 |
| 2. | Examples are sodium carbonate and potassium acid phthalate which are used to standardize acid and base solutions .
例如碳酸钠和邻苯二酸氢钾，分别用来标定酸和碱溶液。 |
| 3. | It is stirred with 10%sodium carbonate solution(50ml)and then with water (50ml), after which it solidifies .
与10碳酸钠溶液（50毫升）混合搅拌，然后再用50毫升水混合搅拌，从而析出固体。 |
| 4. | Hygienic standard for sodium carbonate in the air of workplace
车间空气中碳酸钠卫生标准 |
| 5. | Phytopharmaceutical products . sodium carbonate . requirements
植物药物学产品.碳酸钠要求 |
| 6. | The crude sodium carbonate ash obtained from these plants
苏打灰从这些植物中获得的粗碳酸钠灰 |
| 7. | Chemical reagents - sodium carbonate , anhydrous
化学试剂无水碳酸钠 |
| 8. | Application for some novel methods to produce the stable sodium percarbonate
过碳酸钠的应用和稳定技术进展 |
| 9. | Sodium carbonate for industrial use - part 1 : determination of bulk density
工业用碳酸钠.第1部分:体密度的测定 |
| 10. | Food additive - sodium carbonate
食品添加剂碳酸钠 |
