The BP neural network used in the temperature characteristic of the boundary film on the screw-nut pairs surface in the wear-self-compensation system was established.
本文用双隐层BP人工神经网络建立了丝杆螺母副表面边界膜温度特性的磨损自补偿数学模型。
This paper introduces a design method of variable pitch screw, This methed make use of multinomial, bring out the boundary conditions which the design need and the operating range of the methed.
本文介绍了一种变螺距螺杆的设计方法，该方法采用多项式，并提出了设计所需的边界条件和这种方法的使用范围。
The three-dimensional potential flow inside the impeller of a screw centrifugal pump was analysed by the boundary element method.
采用边界元法对螺旋离心泵叶轮中的三维势流进行了数值计算。
Moreover, a three-dimensional flow field of the retarded adhesive mortar in a single-screw extruder is obtained after supposition, simplification and carrying on the boundary treatment.
结合假设经过简化和边界处理，得出单螺杆挤出机中缓凝砂浆的三维流场。
Moreover, a three-dimensional flow field of the retarded adhesive mortar in a single-screw extruder is obtained after supposition, simplification and carrying on the boundary treatment.
结合假设经过简化和边界处理，得出单螺杆挤出机中缓凝砂浆的三维流场。
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