A mathematics model which deals with 54 variables and 43 constraint conditions is proposed to optimize the product structure by using linear programming theory.

本文运用线性规划理论，建立了一个包括54个变量(产品)，43个约束条件产品结构优化数学模型。

youdao

Study the bearings parts blemish causes the round to the characteristic and regulations of the structure resonance, establishment mathematics physics model.

研究轴承部件缺陷引起轮对结构共振的特征及规律，建立数学物理模型；

youdao

Then, the mathematics model of calculating the surface load and point load in the design of aircraft structure static load test using aircraft surface model is established.

其次结合飞机的曲面外形，建立了飞机结构静力试验设计中的分布式载荷和集中式载荷的演算数学模型。

youdao