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| T 值土壤碱交换能力 | |||
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| t 值 | |||
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| T值 (T级，1〜5 级允许土壤侵蚀量中的最高级) | |||
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T value : 3 phrases in 3 subjects |
| Economics | 1 |
| Management | 1 |
| Securities | 1 |
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