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测定土壤比重时,如测定比重用干土重是固定的(5克或10克)就不必分别依照公式计算,而在事先制成检查表。
In the determination of soil specific gravity, if the measured specific gravity is fixed (5 g or 10 g) with respect to dry soil, it is not necessary to calculate separately according to the formula, but a checklist is prepared in advance.