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| gravedad API Instituto Americano del Petróleo | |||
| 英语 词库 | |||
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| measure of liquid specific gravity as defined by the American Petroleum Institute | |||
| American Petroleum Institute gravity (index) | |||
| American Petroleum Institute fuel specific gravity | |||
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API gravity : 1 短语, 1 学科 |
| 技术 | 1 |