水阻绝 water-blocking 世界电报电话行政大会 WATTC (World Administrative Telegraph and Telephone Conference) ..
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The paper describes the design and test results of this cable, as well as the performances of the water-blocking strength materials used in the cable.
文章叙述了这种光缆的设计、试验结果及其关键堵水加强材料的性能。
By using conformal transformation method, productivity formulas of horizontal well, taking effects of non-Darcy flow and water-blocking effect into account, have successful been developed.
应用保形变换方法推导出水平气井产能公式,模型能考虑非达西流动以及水锁效应对水平气井产量的影响。
Combined with water vapor, sulfur dioxide forms sulfate aerosols, which can spread around the globe, blocking solar radiation and chilling the air before becoming acid rain and snow.
二氧化硫跟水蒸气结合形成硫酸盐气溶胶,这种气溶胶可以遍布全球,在变成酸雨和酸雪之前阻隔太阳辐射,降低气温。
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