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Ferrochromium soldering :power keep no more than 40W,tip temperature should not pass 280 oC,soldering time within 3 second, welding position and lens should keep 1.6mm distance at least

铬铁焊接时铬铁功率不要超过40W，尖端温度不要超过280 oC，焊接时间不要超过3秒，焊接位置最少与胶体保持1.6mm距离。

Fick's lens was large, unwieldy, and could only be worn for a few hours at a time.

菲克研究出的眼镜巨大，难以掌控，一次也只能戴几个小时。

The principle of achieving fictious room is using keyboard to control camera's translation and rotation for corresponding to the lens that is near,far or rotation.

能实现场景漫游的原理是使用键盘来控制摄象机的平移和旋转，对应到镜头的拉近、拉远和旋转。

Finally, we discuss the appraisal method and its application of super fiducial axis in assembly of lens.

论述了最佳基准轴评价方法以及在镜头装校定心中的应用。

This is a calculation of the lens field of view of the software, very simple but very practical.

这是一个计算镜头视场的软件，非常简单但是很实用。

This time another optical device, the field lens came to the rescue.

这个时候另一个光学器件，外地镜头来抢救。

Research on the large field projection lithography lens［J］.

大视场投影光刻物镜的研究［J］。

The distributing function of geodesic lens mode field w as established in this paper.

本文建立了波导短程透镜的模场分布函数，给出了波导短程透镜和单模光纤的耦合效率表达式，同时在实际中测得波导短程透镜和光纤的耦合损耗大约为 7db。

Figure 4 illustrates the relationship between the focal length of the lens, field of view, sensor size, and working distance.

一个镜头的基础定义是其焦距，图4图示出镜头焦距，视野，感应器大小，和工作距离间之关系。

Powermate is a technically universal solution, using a positive field lens to redirect field rays.

powermate 是一个在技术上普遍适用的解决办法，用积极的实地镜头转场射线。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了