采用基于L - M算法的BP神经网络对某发动机万有特性进行研究。
Using backpropagation neural network based on Levenberg-Marquardt algorithm, the universal characteristics of engine were investigated.
推导了三次多项式插值公式和三次多项式插值余项，绘制了发动机万有特性曲线。
The formulation of cubic polynomial interpolation and the remainder of cubic polynomial interpolation were deduced and the engine fuel consumption characteristics map was drawn by this method.
本文采用曲线拟合及曲面拟合的方法，对商用车发动机外特性和发动机万有特性进行数学模型描述。
It is identical curve surface or curve in this paper. Business car engine's characteristics describe with mathematics' model.
说明：利用最小二乘发进行回归分析 ，并根据实验数据对发动机的万有特性进行计算 ，并绘制相关图形 。
Made using least square regression analysis of the experimental data, the universal characteristics of the engine to calculate and draw the relevant graphics.
恒星有着许多特性，它是一个巨大的气团，并且有着同样巨大的质量，在万有引力的作用下形成一个有着巨大压力的、质量分布不均的气体球。
Star has many characters, it is a huge air mass, and also has huge mass, it forms a gaseous sphere with great pressure force and uneven distributed mass under the effect of gravitation.
恒星有着许多特性，它是一个巨大的气团，并且有着同样巨大的质量，在万有引力的作用下形成一个有着巨大压力的、质量分布不均的气体球。
Star has many characters, it is a huge air mass, and also has huge mass, it forms a gaseous sphere with great pressure force and uneven distributed mass under the effect of gravitation.
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