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| ammonia; anhydrous ammonia; azane; hydrogen nitride | |||
| ammonia (NHS) | |||
| ammonia A colorless gaseous alkaline compound that is very soluble in water, has a characteristic pungent odour, is lighter than air, and is formed as a result of the decomposition of most nitrogenous organic material, NH3 | |||
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| gaseous ammonia | |||
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ammoniac : 91 短语, 13 学科 |
| 一般 | 2 |
| 农业 | 18 |
| 化学 | 36 |
| 技术 | 4 |
| 材料科学 | 1 |
| 植物学 | 2 |
| 煤炭 | 5 |
| 环境 | 4 |
| 电子产品 | 1 |
| 纺织工业 | 1 |
| 自然科学 | 4 |
| 自然资源和野生动物保护 | 9 |
| 财政 | 4 |