| 单词 | chemical substance |
| 释义 | chemical substance When we dream, we produce a chemical substance in our spinal cord that inhibits movement to stop us thrashing around. The Sun Earlier yesterday a soldier was lightly injured when a chemical substance was sprayed at him near the building, the army said. Times, Sunday Times They may be permeable only to mechanical work, or only to heat, or only to some particular chemical substance. Retrieved from Wikipedia CC BY-SA 3.0 Brackets can also be used in chemistry to represent the concentration of a chemical substance or to denote distributed charge in a complex ion. Retrieved from Wikipedia CC BY-SA 3.0 Chemical reactions convert one chemical substance into another. Retrieved from Wikipedia CC BY-SA 3.0 |
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