1、

This paper analyses the flow characteristics of the variable axial piston pumps through flow pulsation resource, putting forward a method to reduce the reduction of pressure pulsation and the test result of a pump.

分析了变量轴向柱塞泵的流量特性,从该类泵流量脉动源出发,提出了减少泵压力脉动双幅值误差的方法.给出了该类泵减小压力脉动的数学模型及某泵的试验结果。

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2、

Finally, group classification of a generalized KP equation is undertaken. Group invariant solutions of the equation are obtained by combining the symmetry reduction method with the variable coefficient generalized Tanh method.

另外,我们还给出了广义Kadomtsev-Petviashvili方程的古典对称群分类,并结合变系数广义Tanh函数方法获得了其群不变解。

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3、

a premise reduction method on fuzzy inference based on variable weights theory

基于变权理论的模糊推理前提约化的一类方法

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4、

gaussian process latent variable model ( gplvm) is a popular manifold method recently proposed for dimensional reduction.

高斯过程隐变量模型是最近提出的比较流行的无监督降维方法。

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5、

The equivalence among classification , relative positive-region and variable precision rough sets, attributes reduction becomes multiform.

并且三者之间打破了在经典粗糙集模型中的等价性,需要针对三者分别建立模型, 使属性约简变得多样化.

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6、

Geared turbine drive Development of variable speed coupler reduction box for drilling machine in oil-field

涡轮机减速齿轮传动油田钻机用调速型偶合器减速箱的研制

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7、

Development of variable speed coupler reduction box for drilling machine in oil-field "Technical specifications of springs for fuel pump, governor and injecter of diesel engines"

油田钻机用调速型偶合器减速箱的研制GB/T2940-1982柴油机用喷油泵、调速器、喷油器弹簧技术条件

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8、

By means of variable substitution and iterative method, this paper puts forth some new higher-order differential equations, and gives their formula of reduction of integrals to common denominator.

借助变量代换、迭代等方法,提出几类新的高阶常微分方程,给出其相应的通积分公式。

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