求翻译：摘 要:列举书刊中关于土壤水分含量的表述及方程式，指出其表述及方程式的疏漏和错误之处，说明土壤水分含量以质量计的应称为土壤水分质量含量或土壤水土质量比，采用量符号 ；以体积计的应称为土壤水分体积含量或土壤水分体积分数，采用量符号 ，并分别给出规范的量方程式和数值方程式。是什么意思？

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Summary: the enumeration in books on soil moisture content, pointed out that the expression and equation in its presentation and formula omissions and mistakes in the soil moisture content should be referred to the improvement of quality of the soil moisture content or soil quality, soil and water q

Abstract: Enumerates in the books and periodicals about the soil moisture content indication and the equation, pointed out its indication and the equation oversight and the mistake place of, explained the soil moisture content should be called the soil moisture quality content or the soil water and

Summary: listed books in the on soil water content of expressed and the equation, pointed out that its expressed and the equation of omissions and errors of Department, description soil water content to quality meter of should called soil water quality content or soil soil and water quality than, us