The direct calculation formulas of the rectangular foundation containing weak underlying stratum are induced and a computer program is developed.
推导出具有软弱下卧层土矩形基础的直接计算公式，编制了相应的计算机程序。
Based on electrothermal principle and heat transfer theory, calculation formulas of electro heat parameters for direct resistance heating appliance are deduced in this paper.
根据电热基本原理和传热学理论推导出了直接电热电阻炉在恒压加热制度下，电热参数的计算方法。
On the basis of above mentioned formulas, the calculation on elastic moduli of stratified foundation is made with direct method and a corresponding calculation software programmed.
以此为基础，利用直接法进行分层弹模计算，并编制了相应的计算软件。
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