一、制作目的土的容量z、比重G和含水量ω三个物理性质基本指标是通过试验得到的,而土的干容重r_d、孔隙率n、孔隙比e、饱和重r_m和浮容重z′等物理性质导出指标是根据以上三个基本指标通过公式计算得到的。本文提供的计算尺可很迅便地求出导出指标而省略了繁复公式运算。 First, the purpose of making the production capacity of the soil z, the proportion of G and water content of the three basic indicators of the physical properties are obtained through experiments, and soil dry weight r_d, porosity n, porosity ratio e, saturation weight r_m and float weight z ’ Physical indicators such as the export of indicators is based on the above three basic indicators calculated by the formula. This article provides a slide rule can be very quickly find the export indicators and omit complex formula operations.