column density

基本解释

• 柱密度

英汉例句

双语例句

• 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.
  利用气体型流体进行欠平衡钻井，或钻易漏地层时，流体密度及井下液柱压力的确定十分重要。
• 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.
  针对塑料密度这一重要的物性参数的密度梯度法测定，从理论上对影响密度梯度柱配制过程的各个方面进行了分析； 对密度梯度与高度的线性关系进行了理论的推导；
• 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.
  结果表明，填料塔的最小润湿速率与填料大小无关，而与堆积方式有关。

权威例句

• 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

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词组短语

短语

• column power density 电子束功率密度
• NO2 vertical column density NO2 垂直柱密度
• Vertical column density 垂直柱浓度
• Density gradient column method 密度梯度管法
• density gradient column 梯型密度柱;密度梯度管;密度测量柱

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专业释义

天文学

• 柱密度

  The HeⅠrequires a column density of hydro-gen in an HⅡregion of greater than 1020 cm-2.
  HeⅠ的吸收线强度比要求大于10~(20) cm~(-2)的氢柱密度。