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This paper applies the concept of "contact" in Differential Geometry into the machining of sculptured surfaces, presentes the contact principle of the machining of complicated surfaces, using the circumference circle of the cylindrical cutter to sweep curved surfaces instead of ball-end mill .

把微分几何中曲线与曲面之间的&切触&概念应用于复杂曲面的数控加工，提出用圆柱铣刀和圆锥盘铣刀的外圆在五坐标联动中加工三维自由曲面的最佳切触条件。

Making the full use of the theoretical knowledge of FEA,contact mechanics and friction wear,and integrating with the research of other domestic and international scholar. Starting with analyzing working characteristics of journal bearing of roller cone bit, we finished the contact FEA of the journal bearing and the thrust bearing, using ANSYS software. The tolerance ranges of journal bearing of a roller cone bit are specially studied.

本文利用有限元、接触力学和摩擦学理论知识，同时结合国内外其它学者的研究，从分析牙轮钻头滑动轴承的工作特性入手，利用软件ANSYS完成了牙轮钻头中大、小轴承及止推轴承的接触有限元分析工作，对牙轮钻头滑动轴承的尺寸公差的取值，进行了专门的研究和探讨。

User input can be received, which causes the communication device to perform a contact action relating to one of the contact items.

可以接收用户输入，这使得通信设备执行与其中一个联系项相关的联系动作。

Anthropologists divided culture into two broad categories: contact culture and the non-contact culture.

人类学家把文化大致分为两大类：接触文化和非接触文化。

A dance position where the leader's left side and the follower's right side are in contact or almost in contact, and the opposite sides of their bodies are open in a V-Shaped position, leader looking right and follower looking left.

男士的左侧与女士的右侧接触或几乎接触，两人身体另一侧打开呈V字形位置，引导者在右，跟随者在左，是PP的反向位置。

A dance position where the leader's left side and the follower's right side are in contact or almost in contact, and the opposite sides of their bodies are open in a V-Shaped position, leader looking right and follower looking left.

Counter Promenade Position 反行进位置：男士的左侧与女士的右侧接触或几乎接触，两人身体另一侧打开呈V字形位置，引导者在右，跟随者在左，是PP的反向位置。

One day everyone in the Wanzi Xi, a sudden power outage, this has been because of love pretty girls, has been with contact lenses, the doctor told her that if she had been with contact lenses, the retina will become gradually thinner, a day blindness .

有一天大家都在上晚自习，突然停电了，这个女生因为一直爱漂亮，所以一直带隐形眼镜，医生告诉她，如果她一直带隐形眼镜的话，视网膜会逐渐逐渐变薄，有一天天会失明。

The Advisory Apple products distributor you can contact the sales of Apple products, they can help you solve the general problem of hardware and software failures, if the dealer has been able to solve your problem, the dealer can help contact Apple Authorized Service Centre for maintenance.

咨询苹果产品经销商您可以联系该苹果产品的销售商，他们可以帮助您解决一般的软件故障和硬件问题，如该经销商已无法解决您的问题，可由该经销商协助联系苹果授权维修中心进行维修。

From FEM, the contact stress obeys the semi-ellipse distribution and the Mises stress and shear stress are also consistent with contact mechanics theory, but there exists offset or deflection in the symmetric lines of stress distribution, which originates from tooth bending deformation.

由有限元方法得到的渐开线轮齿的接触应力符合Hertz理论中的半椭圆分布规律，Mises应力和剪应力分布也符合接触力学理论，但应力分布的对称中心存在偏离或者偏斜现象，分析认为，是由于轮齿弯曲变形造成的。

In the process of switching operation of 220kV primary equipment,the switch of motor power source tripped suddenly,and then electric arc occurred between the moving contact and stationary contact of disconnecting switch.

对一起因220kV一次设备在倒闸操作过程中，电动机电源开关突然跳闸，致使隔离开关动、静触头之间产生电弧，危及电网和设备安全的这一危险情况进行了分析，找出危险根源，强调执行反事故措施的重要性。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"