Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.

对于速度边界层提出了相似性解的解析结果，给出了速度分布、边界层厚度、摩擦阻力和水头损失的解析计算表达式。

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A substructure method and a dual reciprocity boundary element method (DRBEM) are applied to calculate four-pole parameters and transmission loss of ducts and silencers with complex flow.

将子结构法和双倒易边界元法联合应用于预测具有三维复杂流存在时管道和消声器的四极参数与传递损失，阐述其基本原理与数值过程。

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Using Darcy-equation to calculate friction loss is more convenient, but using the comprehensive equation can improve calculation precision. A empirical method of dealing with pump station boundary…

用列宾宗公式计算摩阻。可以提高计算精度。对长输管道中间泵站边界条件，给出了经验处理方法。

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Not least because many Tory MPs - as individuals - will not grieve too much at the loss of boundary changes.

BBC: Boundaries: a running sore?

Noel Park estate in north London has also suffered due to loss of original windows and doors, rendering, inappropriate roofing materials and loss of boundary walls, the organisation said.

BBC: London's unique areas 'at risk'

The loss of votes to the Greens may encourage Democrats to extend the boundary of their party a little further to the left, which might put more Green issues into the centre of the political stage.

ECONOMIST: The Spoiler