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| 21. | weight index number |
| 比重指数 |
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| 22. | equivalent specific weight |
| 当量比重 |
|
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| 23. | maximum specific weight |
| 最大比重 |
|
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| 24. | specific gravity curve |
| 比重曲线 |
|
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| | |
| 25. | specific gravity of blood |
| 血液比重 |
|
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| | |
| 26. | seed specific weight |
| 种子比重 |
|
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| | |
| 27. | specific gravity of urine |
| 尿比重 |
|
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| | |
| 28. | hydrostatic balance |
| 比重天平 |
|
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| | |
| 29. | actual specific gravity |
| 实际比重 |
|
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| | |
| 30. | specific gravity measurement |
| 比重测量 |
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