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| 砂的级配 | |||
| 沙子粒度分级; 砂粒级配; 砂粒分级 | |||
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| 砂粒〔沙粒〕级分〔级配〕; 砂子〔沙子〕粒度分级 | |||
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sand grading : 7 phrases in 3 subjects |
| Desert science | 2 |
| Engineering geology | 1 |
| Technology | 4 |
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