通过将裂隙之间的交线看作为内部边界，推导了多裂隙相交时的边界单元法公式。
Supposing that the intersection of multi-group fractures is treated as the internal boundary, a boundary Element Method of fracture network seepage flow is obtained.
给水系统可靠度的预测，一般可用解析法依据多单元可靠度和其间的逻辑联系求得。
The reliability of a water supply system is usually predicted by analytics basing on the reliability of every unit and logical connections among them.
空间协同分析时，采用超元法（每个单元由多根杆组成）计算等效柱的侧移刚度矩阵，自由度成倍减少。
The method is applied to calculate lateral stiffness matrix in space cooperating analysis and the the degree of freedom can be greatly decreased.
基于有限单元法，推导出多自由度结构体系在地震作用下的增量形式的运动方程，建立了大跨度斜拉桥的地震激励模型。
The incremental motion equations of a M DOF structural system excitated by seismic waves are formulated based on FEM, and a seismic response model for cable stayed bridges are proposed.
本文介绍了级联多单元高压变频器使用中点漂移法解决单元故障时提高输出电压的方法。
This paper analyzed the Neutral Point Excursion method(NPEM)of PWM control with Cascaded Multi-cell Multi-Level Inverter.
经过将多构件机构中的传动形式归纳为两种传动单元，推导出用传动单元法计算多构件机构传速比的通用公式。
Universal formula in the calculation of transmission velocity ratio of mechanisms having multiple structural components using the unit method was obtained.
经过将多构件机构中的传动形式归纳为两种传动单元，推导出用传动单元法计算多构件机构传速比的通用公式。
Universal formula in the calculation of transmission velocity ratio of mechanisms having multiple structural components using the unit method was obtained.
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