The coefficient of variation of saturated water content decreased with the depth of profile. The coefficient of variation of bulk density and field capacity fluctuate with depth of soil.
饱和含水量的变异系数都随深度的增加逐渐降低，含水量、容重和田闷持水量的变异系数随深度的呈波动变化。
2
Depthprofile control in water injector is not only an important technology of secondary oil recovery, but also the technical key of tertiary oil recovery in severe heterogeneous oil reservoirs.
注水井深度调剖不仅是一项重要的二次采油技术，而且是严重非均质油藏进行三次采油的技术关键。
3
The compound ion polymer in-depthprofile adjusting and water plugging agent had been developed by compound ion polymer, urotropine, resorcin, ammonium chloride as mostly material.