A logarithm mathematical model is used to analyze 702 CVN impact test data and by means of regression, a general equation is obtained for bridge steel and welding seams.

对702个CVN冲击试验数据应用对数数学分析模型进行回归，得到桥梁钢和焊缝的通用计算表达式。

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The model takes into account the viscous effects of both liquid bridge and surrounding bath and includes these effects in a corresponding uniform mathematical equation group.

该模型综合考虑了流体桥本身及外围液体浴槽的粘滞效应，将其纳入相应的统一的数理方程之中。

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According to the mechanical analysis of bridge crane's grab, the mathematical model between crane's horizontal movement and grab swing is established.

根据起重机抓斗的受力分析，建立了起重机水平运行与抓斗摆动关系的数学模型。

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