查询词典 tangent

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

Tangent surface ...

最后，可使用"相切曲面"对话框中的"曲线"选项页编辑参照曲线。

A gear H62 which made in yellow brass with the same mode number m=0.34, 2mm thick and had a center hole, when the gap get C=0.5%t , and punched with compound punching die, and the dimension accuracy reached IT7, the part have a flat surface ,the verticality of tangent plane reached 89.5°, its roughness Ra magnitude are 12.5μm, height of burr are 0.10mm; and the punching part are punched with progressive die, the gap C=7%t , initial accuracy are IT11, and have an more rough surface, even can see the gap with eyes.

例如料厚t=1.5mm的H62黄铜冲裁件，选用C≤40%t单边Ⅰ类小间隙冲裁比选用C≤8%tⅢ类大间隙冲裁，冲件固定误差将加大40%～60%，精度至少降一级。此外，采有无搭边排样，冲件的误差要远大于有搭边排样冲件。无搭边排样冲件。无搭边排样冲件的精度低于IT12级，而多数有搭边排样的冲件精度在IT11～IT9级之间，料厚t＞4mm的冲件，尺寸精度会更低一些。

In Particular, the tangent stiffness matrix in the incremental relation becomes symmetric, ensuring the efficiency in the numerical analysis, whereas the integrated constitutive relation serves as a guide, ensuring the convergence on the physically feasible stress strain relation.

值得一提得是，增量本构方程中的切线劲度矩阵是对称的，使得在进行数值分析时十分有效。而全量本构方程作为确保实际可行的应力应变滞回圈收敛的向导。

Avoid using input elements that are tangent to each other since this may result in geometric instabilities in the tangency zone.

避免使用相互相切的元素，因为这样可能在相切区域引起几何不稳定性的后果。

In this paper, we propose a dimension reduction method based on the tangent bundle.

本文提出了一种基于切丛的维数约简方法。

We define differential dynamic system on the tangent bundle and the master bundle.

定义了建立在切丛和主丛上的微分动力系统。

The tangent bundle of the manifold can not only describe the structure of localcharacteristics, but the overall shape of the structure of convection can be described.

流形上的切丛不但能够刻画流形局部的结构特征，而且对流形整体的结构也能够进行描述。

Itshows that the dimension reduction algorithm based on the tangent bundle is an effectivemethod by dimensionality reduction experiments on handwritten data and breast cancer data.

通过对手写体数据的降维实验和Breast Cancer实验表明，基于切丛的维数约简方法是一种有效的降维算法。

In recent years, set-valued optimization make much progress. In Chapter 5, based on Clarke tangent cone, we establish epiderivative of a class of set-valued maps and its properties. And furthermore, sufficiency optimization conditions of set-valued optimization are also obtained.

在第5章中，针对近几年发展起来的集值优化，基于Clarke切锥利用Epigraph建立了一类集值映射的Epi-导数并讨论它的一些性质，同时给出集值优化的充分的最优性条件。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷