面

By applying the difference arithmetic to solve the differential vibration model of the single-degree-of-freedom,the acceleration responses of the vibrated bevel wheel was calculated.The bevel wheel contact fault was simulated by taking it as the impulsion loading in local point.By using techniques of wavelet de-noising and demodulated resonance,gear contact character information was picked up successfully.

从齿轮的单自由度振动模型出发，运用差分算法对模型进行求解，得到斜齿轮的振动加速度响应，将齿面接触型故障等效为在局部点突加一个冲击载荷，对齿轮齿面接触型故障进行了仿真，利用小波降噪和共振解调技术分别对仿真的染噪振动加速度信号进行处理，成功地提取了轮齿接触故障的信息。

First the math theory of machining simulation is studied, and the set structure of NC machining simulation system whose components, including time, input, output and so on, are defined. Hereby we set up the hierarchy structure, the logical structure, the static model and the dynamic model of simulation system. The construction method of sweep entity of cutter and rotation parts is researched, and their differential geometry invariants are calculated. NC code is unscrambled, and the recursion division arithmetic of time segment is put forward, which is the driven data of the movement or rotation parts. The CLDATA should be interference-free. To examine if there is interference between cutter flank and the work piece, an arithmetic that discussed the existence of intersecting curve between them is put forward. To examine if there is interference between two turrets, an arithmetic that discussed the existence of intersection set between two polygons is put forward.

首先研究加工过程仿真的数学基础，然后定义数控加工仿真系统的集合结构及时间集、输入集、输出集等概念，建立加工仿真的层次结构和逻辑结构，阐述双刀车削仿真系统的静态模型和动态模型建立方法，分析刀具扫描体和旋转部件扫描体的建立方法及其微分几何性质；研究NC代码解读技术和双刀加工时间段递归子分划技术，为驱动各仿真单元作数据准备；通过讨论后刀面和工件表面交线的存在性判断刀具后刀面与工件间是否干涉，通过求多边形的交集判断刀架与刀架是否干涉。

The key point of the arithmetic is to ensure the triangles created on the joint of faces correctly.

该算法的核心是保证面与面接合处的三角化的正确性。

A novel arrow-shaped monopole antenna with a coplanar waveguide feed line is presented. The element and the feed line are etched on the same side of a substrate.

提出了一种新颖的共面波导馈电单极天线，"△"形辐射单元馈刻在介质板上，由同一面的共面波导传输线馈电。

In iris ciliary body cyst group, iris ciliary cysts were unequal size, the biggest arrowy proportion of cyst was 1.592mm2, and the smallest was 0.081mm2. The cyst was gone after operation in 1 case (1 eye) with cyst .

5本组虹膜睫状体囊肿大小不一，最大的囊肿矢状面面积为1.592mm2，最小的囊肿矢状面面积为0.081mm2。1例（1眼）术前合并囊肿者，术后囊肿消失。

Excavated or modified form of pressure stabilized after crack hit paved surface of asphalt concrete or cement concrete surface.

改造方式包括挖除或砸裂压稳之后铺筑沥青混凝土面层或水泥混凝土面层。

The algorithm is applied to the Nakai's model, and the new development rule of the state variable associated with the subloading surface is presented.

将该算法应用于中井的子负荷面本构关系模型，幷提出了新的子负荷面状态量的发展规则。

A discussion is presented on the error compensation of the reflecting planes of polygon s in accurate angular measurement using autocollimator and polygon s.

讨论了利用多面棱体和自准直仪进行精密角度检定时多面棱体工作面偏差的补偿问题，给出了工作面偏差补偿符号的判定方法。

At least one of the first and second axially facing surfaces has a friction reducing surface treatment.

第一轴向面和第二轴向面中至少一个具有减小摩擦的表面处理。

In a rectangular shape YBCO singledomain sample, there are many long, smooth and parallel growth stripes on the top surface, which indicates that the ab plane is parallel to the axis of the cylinder sample, the long narrow and smooth stripes are formed by the continues growth along a axis.

在ab面竖直生长的YBCO晶体中，样品表面光滑、平行的长直条纹是晶体沿ab面连续生长的结果，沿c轴方向的平行台阶，则是晶体沿c轴方向以层状方式生长所形成的，十字线夹角约78°。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新