The geometric structure of nonlinear least squares solution for signals by complex exponents is offered in this paper.

本文给出了复指数信号模型非线性最小二乘解的几何结构。

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Loading of trains is a complex issue. It involves many factors such as the axle weight, suspension system, traveling speed, track structure, geometric irregularity of lines and so on.

列车荷载是一个很复杂的问题，同时涉及列车轴重、悬挂体系、行车速度、轨道组成、线路平顺等等因素。

youdao

Loading of trains is a complex issue. It involves many factors such as the axle weight, suspension system, traveling speed, track structure, geometric irregularity of lines and so on.

列车荷载是一个很复杂的问题，同时涉及列车轴重、悬挂体系、行车速度、轨道组成、线路平顺等等因素。

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