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Based on analysis of generation algorithms of cutter－ contact point trace in NC machining of sculptured surfaces,in this paper,a property on continuity of cutter－ contact point trace is suggested and proved.

在分析国内外关于自由曲面数控加工中刀位点轨迹生成算法的基础上，提出了一个关于刀触点轨迹连续性的命题并加以证明。

The fabrication of transmission gratings with the grating constant of 2.5μm and 5μm is studied in ZK6 and LaF2 glasses at the machining speed of 400μm/s by using femtoscond laser with the peak intensity of 2.7×10~(13)W/cm~2, and the diffraction patterns of the grating are presented with a semiconductors laser at 650 nm.

在加工速度为400μm/s、激光的峰值功率密度为2.7×10~(13)W/cm~2时，在ZK6玻璃和LaF2玻璃内制备出光栅常数为2.5μm和5μm的透射式衍射光栅，并在650nm的半导体激光照射下获得了光栅的衍射图样。

It is proved that it can generate multi-axis NC machining tool-path for all kinds of triangular mesh surface models accurately and efficiently.

实例证明，该算法刀轨生成精度高，运行速度快，且适用于各种复杂三角网格曲面模型多轴数控加工刀轨的生成。

This paper focuses on the effects of machining tolerance on monostatic RCS of triangular trihedral corner reflector s by using Physical Optics method.

基于物理光学法研究了三角形三面角反射器加工公差对其单站雷达散射截面的影响。

Our company is an accumulated 20 years of tungsten steel and precision molds professional experience in enterprise production, the company has all kinds of high-precision machining equipment and a number of outstanding professional and technical personnel, using the advanced technology, available upon request Production of high-precision, difficult tungsten steel stamping, drawing, and precision die cut wear-resistant ceramic pieces.

我公司是一家积累了20多年的钨钢及精密模具专业生产经验的企业，本公司拥有各类高精度的加工设备及一批优秀的专业技术人员、采用国内外先进的工艺技术，可根据要求生产高精度、高难度的钨钢冲压、拉深、剪切模具及精密陶瓷耐磨件。

The micro machining proceeded intermittently with removal and stagnation in turns till an aspect ratio of 45 is achieved.

微加工过程会继续下去，间以切除和停滞状态，直到纵横比达到45为止。

Developing the AMC-H45 horizontal machining center, as well as the all new model VT-20 CNC turret lathe.

开发出AMC-H45立式加工中心机以及VT-20数控卧式车床，随著二款机型研发成功营收额达伍亿新台币。

A new idea of generating the process plan system based on knowledge template is proposed according to the characteristics of twin-screw machining.

针对双螺杆零件的加工特点，提出了基于知识模板生成的工艺设计系统的思想。

A new method of ultrasonic vibration electrical discharge machining in gas is proposed in this paper.

介绍一种新的气体超声波振动电火花加工方法。

As an application,machining of 45# steel at 200 HB hardness using uncoated carbide tooling was investigated.

日益增长的时间、设备、材料和人力成本的消耗促使人们寻找更通用、更有效的研究方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。