This paper introduces the problem of nonlinear programming, compares the linear programming with the nonlinear programming, and researches on several common nonlinear double-plan models.

介绍了非线性规划问题，比较了线性规划问题和非线性规划问题，研究了几种常见的非线性双方案模型。

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A nonlinear programming model of production planning with demand constraints is built up and then transformed into a linear programming model by adding constraints.

首先根据实际需要建立车间生产计划的含需求约束的非线性规划模型，然后为求解方便通过引进约束将其转化成线性规划模型。

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In mathematical programming, the problem in which the objective function and constraints are not all linear is called nonlinear programming.

在数学规划中，当问题的目标函数和约束条件并非均为线性时，该问题即称为非线性规划。

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