Generally, gemologists refer to specific gravity, or relative density -- the ratio of the density of a gemstone relative to that of water.
一般来说，宝石指比重，或相对密度-宝石的密度相对于水的密度。the higher the initial relative density, the lower the yield strength of the material, and the earlier the time of break occurred.
初始相对密度越大，材料屈服强度越低，出现破裂的时间越早。Results After clarification by chitin, the relative density and the total solids content declined slightly, but the difference was small.
结果甲壳素澄清后相对密度、总固体物含量略有下降，但差异不大。In water zones, the direction of movement depends on the relative densities of filtrate and formation water.
在含水带，移动的方向和滤液以及地层水的相对密度有关。Continuously indicating and recording gravitometers are sometimes placed upstream with remote indicators located at the switching point.
有时将连续指示和记录的相对密度仪安装在站的上游，在站上油品切换点处设置遥测指示仪表。To the same material, with increasing relative density, the yield stress increased and yield region decreased.
同一种材料的泡沫金属，其屈服应力随相对密度增大而增大，平台区相应变窄。This implies that , the bigger the diameter of gravel in soils, the smaller its volume strain from liquefaction.
体积应变量随著砾石含量与相对密度的增加而减少。Properties: white crystals , bitter, soluble in water easily, lose one of molecular crystal water in dry air, relative density 1. 68.
性能：白色晶体，味苦，易溶于水，在干燥空气中失去一分子结晶水。相对密度1.Mass loss rates of fir leaf litter appeared consistent with the taxa and individual relative density of soil fauna.
不同孔径凋落物袋内土壤动物的类群和个体相对密度与凋落叶的质量损失率呈现相对一致的变化趋势。