为查明不凝气体对水平管外膜状凝结换热特性的影响规律，建立了水平单管的气、液双边界层模型。
Film condensation heat transfer characteristics are studied by numerical simulation for a single horizontal tube in the presence of a non condensable gas.
对于二元正态分布函数，仅需给定插值区域两边的双边界值，即可得到该区域上任意一点分布函数值。
With the given values of bivariate normal distribution function on the two biboundaries of a rectangular region, the values of distribution function on the rectangular region can be found.
采用目前美国国家海洋局（NOAA）推荐的双边界二分式条件价值评估方法，对北京市空气质量改善产生的健康效益进行评估。
The double-bounded dichotomous discrete contingent valuation method recommended by US NOAA was applied to evaluate health gains from air quality improvement in Beijing.
双方就中越双边关系、两国边界领土问题，特别是海上问题全面、坦诚和深入地交换了意见。
Both sides exchanged views on China-Vietnam bilateral relations and boundary issues, especially the maritime issue in a candid, in-depth manner.
半个多世纪以来，中印两国纷争不断，双边关系起伏不定，其中1962年的边界战争曾使两国关系一度陷入僵局，1998年印度的核试验也导致两国关系前景低迷。
Since half a century ago, continued fights and quarrels led an unstable connection between these two countries. Frontier battle in 1962 and India's nuclear test in 1998 even made it worse.
半个多世纪以来，中印两国纷争不断，双边关系起伏不定，其中1962年的边界战争曾使两国关系一度陷入僵局，1998年印度的核试验也导致两国关系前景低迷。
Since half a century ago, continued fights and quarrels led an unstable connection between these two countries. Frontier battle in 1962 and India's nuclear test in 1998 even made it worse.
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