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Is a professional manufacturer of single-sided and multilayer circuit board manufacturers, in the face of highly competitive PCB market, the company broke the single product structure to PCB industry based on the implementation of a diversified operation, with the exception of PCB production, but also sales of copper clad laminates and electronic components, while a number of factory lines to solve environmental problems, I Division also provides drag-cylinder boards, Recycling Waste CCL, waste water stripping, drilling aluminum, gold / tin frame .

广州市百弧电子材料有限公司是一家专业生产单双面及多层线路板的厂家，面对竞争激烈的线路板市场，公司打破单一产品结构，以PCB产业为依托，实行多元化经营，除生产PCB外，还销售覆铜板和电子元器件，另外为众多线路板厂解决环保问题，我司还提供拖缸板，回收废覆铜板、废退锡水、钻孔铝片、金/锡边框。

After that, the aforementioned flow field in metering section of the triple-screw extruder with single-thread elements and 45mm pitch has been calculated too for the purpose of comparing the difference of flow fields between the single-thread element and three-thread element.

还以螺距45mm的单头螺纹元件为代表，计算了由单头螺纹元件构成的上述流场，分析、比较螺纹头数对流场的不同影响。

Rotomolding production areas in the country, especially in rotomolding equipment, rotomolding die, we After 20 years of study, research, has developed a three-position swing-style single-arm, three-position-and from the single arm, the five-position And from the arms of different models of rotomolding machine.

在国内滚塑生产领域，尤其在滚塑设备、滚塑模具方面，我们经过20多年的探讨、研究，先后研制开发了三工位摆动式单臂、三工位往返式单臂、五工位往返式双臂等不同型号的滚塑成型机。

DC motor complex large-scale three-phase power transformer deep-trough three-phase asynchronous motor DC motor DC motor single-phase squirrel-cage induction motor.Three-phase commutator motors, single-phase motor power sub-phase squirrel-cage three-phase asynchronous electric double mine explosion-proof motor with squirrel-cage three-phase asynchronous motor rotor cup AC servo motor drives three-phase asynchronous motor principle of rotating magnetic field Generation and transmission of three-phase induction motor winding three-phase stepper motor 165mm Three-phase three-phase synchronous motor stepping motor JFB power generator rotor rectifier type AC synchronous motor DC servo motor three-phase current rotating magnetic field of teaching instrument Wound Three-phase alternator motor 160 rats of three-phase permanent magnet generator cage induction motor Synchro Motor medium-sized three-phase power transformer

直流复励电动机大型三相电力变压器三相异步深槽式电动机直流电动机直流电机单相异步鼠笼式电动机三相整流子电动机单相电动机电源分相器三相异步双槽鼠笼电机矿用防爆电动机三相异步鼠笼式电动机杯形转子交流伺服电动机三相异步电动机调速原理旋转磁场的产生与变速三相绕线式异步电动机 165mm三相步进电机三相同步电动机 JFB型硅整流发电机转子供电交流同步电机直流伺服电动机三相电流旋转磁场示教仪绕线式电动机三相交流发电机 160型永磁发电机三相鼠笼异步电动机自整角电机中型三相电力变压器

N5A airplane has the layout of single engine, single pilot, low wing and fixed tricycle landing gears, and it is powered by an American Lycoming I0-720-D1B type 400HP piston engine and an American Hartzell constant three-blade metal propeller.

其中N5A型飞机采取单发动机、单驾驶、下单翼、固定式前三点起落架布局，可进行播种、施肥、除草、森林防火以及农林业病虫防治，经过简单改装后还可进行地质探测、空运、空中摄影、航空体育训练和航空旅游等作业，具有使用成本低、适用范围广、作业能力强、操作性好、安全性高的特点。

When I'm satisfied with the general volume a shell modifier helps me to give thickness to the piece. In this phase, I don't usually bother that much about every single rivet, hole or cut, I just try to develop a good quad topology of the main volumes. Of course the topology is done by taking count of the main cuts and holes, but the rest can be done easily with a normal or bump map. It's up to you to decide how much a single detail is worth to be modeled or can it be put into a bump map. I usually adopt a "comfortable" criteria...it means that if something looks tricky to me to be carved or extruded into an existing geometry I usually put it into a normal map. When you make something for production, you don't usually have much time to model everything, so you need to set priorities.

当我对整个盔甲的体积感满意之后，一个shell修改器就可以帮我给整个盔甲添加厚度，在这个阶段，我通常不会考虑太多那些细小的铆钉，洞眼或者切边，我只是给整个的模型确立一个好的四边形拓扑结构，当然拓扑是通过重视主要的切割和打洞来形成的，但其余那些细小的部分可以用一个normal 或者bump贴图很容易地模拟出来，这由你来决定到底一个细节是值得建模还是放到一个bump贴图里面，我通常采用一个&舒服&的标准，也就是说，如果有什么东西对我来说，在已有模型上再挤出或者开洞是非常麻烦的，那么我就通过Normal贴图来表现，而当你为商业生产制作模型时，你通常都没有足够的时间来把任何东西都建出来，因此你需要设置重点。

The focusing beam radius' ratio between the telescope lens compound system and the single lens increases via length (70~400mm) increasing, and the maximum ratio is 30, meanwhile the ratio between the telescope-lens compound system and the single lens decreases via length (70-400 mm) shorting, but the maximum difference of the focusing beam radius' is 0.043μm.

结果表明，随着距离(70~400mm)的增加，两者的聚焦效果相差增大，最大为30倍；随着距离(70~400mm)的减小，两者的聚焦效果相差减小；经望远镜和薄聚焦透镜组合系统聚焦的高斯光束束腰处光斑半径随距离(70~400mm)变化的最大值为0.043μm。

Using this method, the effect of the PM-PCF structure on the optical characteristic parameters, including modal field diameters,effective refractive index of space-filling mode, normalized frequency, mode field and single-polarization single-mode region etc., are studied systemly.

在第三章，通过全矢量有限元分析方法详细地分析了保偏光子晶体光纤结构参数对光子晶体光纤的光学特性影响，包括对单偏振单模光子晶体光纤的模场直径、基空间填充模的有效折射率、归一化频率、模场分布、单偏振单模区域等一系列光学特性参数进行了分析。

Left pole and upper pole of single phase 2 pole socket should connect to phase line and right pole and under pole should connect to neutral; right pole of single phase 3 pole socket should connect to phase line and left pole should connect to neutral line.

单相两插座，面对插座的右孔或上孔相线连接，左孔或下孔与零线连接；单相三孔插座，面队插座的右孔与相线连接，左孔与零线连接

In this paper,the single-wire bus transport protocols were introduced simply,the solution of CDMA and TDMA by SCM in single-wire bus was analyzed in detail.

简单介绍了单总线的传输协议，详细分析在单总线上利用单片机实现码分多址和串行时分复用的解决方案。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。