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| stalk; stem | |||
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| gas A substance that continues to occupy in a continuous manner the whole of the space in which it is placed, however large or small this place is mad, the temperature remaining constant | |||
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gas : 97 短语, 18 学科 |
| 一般 | 11 |
| 农业 | 2 |
| 冶金 | 8 |
| 化学 | 18 |
| 建造 | 1 |
| 政治 | 1 |
| 煤炭 | 6 |
| 物理科学 | 1 |
| 环境 | 29 |
| 生命科学 | 7 |
| 生态 | 1 |
| 电子产品 | 1 |
| 石油/石油 | 2 |
| 能源行业 | 1 |
| 自然科学 | 1 |
| 营销 | 4 |
| 财政 | 1 |
| 运输 | 2 |