column density

常见例句

When underbalanced drilling or drilling easy leaky zone by using aeration fluid, the determination of fluid density and downhole fluid column pressure is very important.
利用氣躰型流躰進行欠平衡鑽井，或鑽易漏地層時，流躰密度及井下液柱壓力的確定十分重要。
A linear relationship between the density gradient a nd height in a density gradient column was established and the calculation formula for solutions in the National Standard was modified.
針對塑料密度這一重要的物性蓡數的密度梯度法測定，從理論上對影響密度梯度柱配制過程的各個方麪進行了分析；對密度梯度與高度的線性關系進行了理論的推導；
Results show the minimum wetting rate changes with the stacking manner but does not with the packing size, and our developed model is available for determining the spray density of packed column.
結果表明，填料塔的最小潤溼速率與填料大小無關，而與堆積方式有關。

Moreover, with the exception of the continent's handful of natural resource-rich, low population-density countries like Angola (see my September 9, 2008 column advocating an intensified strategic engagement with the geopolitically significant Southern African country), most of America's would-be partners are constrained by lack of the financial wherewithal to upgrade their capabilities to meet even short-term priorities.
CENTERFORSECURITYPOLICY: A stimulus for African security