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。
Depth profile 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。
The compound ion polymer in-depth profile adjusting and water plugging agent had been developed by compound ion polymer, urotropine, resorcin, ammonium chloride as mostly material.
以复合离子聚合物、六次甲基四胺、间苯二酚为主要原料，制取复合离子聚合物调剖堵水剂。
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