... 常用数学符号（mathematic symbols） 常用希腊字母（grecian letters） 常用数学式（mathematic expressions） ...
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It is showed that the geophysical concepts, principles and methods are connected in time domain and depth domain, and the mathematic expressions are similar.
证明了时间域与深度域中的地球物理概念、原理和方法是相互联系的，其数学表达方式是相似的。
The mathematic expressions of temperature stress and dry shrinkage stress are deduced. The time-varying model based on multiple factors of concrete face stress is established.
推导了温度应力分量和收缩应力分量的数学表达式，建立了面板应力多因素时变分析模型；
This proposed method USES mathematic expressions and iterations to solve the problem, and it is a reliable and accurate method.
本方法采用解析表达式、用数值迭代计算法解决给定的问题，是一种精确的方法。
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