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| asphalt; bituminize | |||
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| bitumen A generic term applied to natural inflammable substances of variable colour, hardness, and volatility, composed principally of a mixture of hydrocarbons substantially free from oxygenated bodies. Bitumens are sometimes associated with mineral matter, the nonmineral constituents being fusible and largely soluble in carbon disulfide, yielding water-insoluble sulfonation products. Petroleum, asphalts, natural mineral waxes, and asphaltites are all considered bitumens | |||
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bitumer : 199 短语, 16 学科 |
| 一般 | 13 |
| 农业 | 1 |
| 冶金 | 1 |
| 包装 | 14 |
| 化学 | 47 |
| 医疗的 | 1 |
| 建造 | 37 |
| 技术 | 16 |
| 材料科学 | 2 |
| 煤炭 | 3 |
| 环境 | 4 |
| 石油/石油 | 2 |
| 能源行业 | 9 |
| 行业 | 14 |
| 财政 | 1 |
| 运输 | 34 |