In this paper, a differential equation of describing the lateral distribution of depth averaged velocity is obtained by simplifying 2d shallow water equations of open channel flow.
通过简化宽浅明渠二维水流运动方程，得到垂线平均流速在横向变化的微分方程序。
The normal modes which can arrive at a receiver are summed according to energy, and an expression for the averaged intensity is then obtained by averaging over the source and receiver depth.
本文首先把能够到达接收器的那些简正波按能量相加，然后对发射深度与接收深度进行平均，导出了负声速梯度浅海中平均声强的表式。
Present results are compared with the results from conventional method, in which the elastic modulus and Poisson's ratio are weighted averaged with the depth.
同时采用成层地基进行分析，将其计算结果与常规方法中采用对弹性模量和泊松比在计算深度内按深度加权平均的计算结果进行比较；
According to the longitudinal equation of flow movement in channel bends, the theoretical formula of depth-averaged longitudinal velocity distrbution is established.
根据弯道水流纵向运动方程，提出了弯道水流纵向垂线平均流速计算公式。
The zeroth order circulations (surface and depth-averaged) approximatively reflect basic characteristics of the circulation in the East Sea.
零阶环流近似地反映了东海环流的基本特征；
An empirical formula of depth-averaged velocity is derived by means of dimensional analysis, and at the same time the characteristics of the variation of bottom current velocity are described.
文中还利用量纲分析，导出了挖槽中心垂线平均流速折减系数的经验公式。
An empirical formula of depth-averaged velocity is derived by means of dimensional analysis, and at the same time the characteristics of the variation of bottom current velocity are described.
文中还利用量纲分析，导出了挖槽中心垂线平均流速折减系数的经验公式。
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