本文把绿洲与绿洲节约用水作为复杂的系统处理，提出了绿洲节水系统的组元、变元及结构图示。
The oasis and hydro-control of oasis were treated as a complex system and the components, variables and the structural figure for the system were developed.
介绍了变壁厚锥形件旋压过程数值模拟的有限元力学模型建立的方法和步骤，以及分析了在建立力学模型时要处理的一些问题。
Methods and procedures of FE mechanics modelling of power spinning process of varying thickness conical parts with analysis of certain problems necessary for treatment in such establishing.
本文用变分有限元方法处理了两维两相非线性不稳定渗流模型。
In this paper, a non-linear model for two dimension and two phases unsteady state flow through a porous medium is solved by a variational finite element method.
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