激光束

The effects of preheating on temperature and stress fields of beryllium ring during laser brazing process were studied.

研究预热对铍环激光束钎焊过程温度场和应力场分布的影响。

According to Bouguer's theory the expression of the scattering intensity of particles is obtained. Then in the field of view of the receiver, the distribution of scattering intensity is simulated.

根据布格尔定律导出了群体粒子对激光束的散射光强表达式，然后在接收器视场角范围内，模拟了散射光强的分布情况。

In the laser engineering system,a beam expander and an annular aperture were taken as the equivalent of the Cassegrain telescope system.

在激光工程系统中，把卡塞格林望远系统等效为一个扩束器和环形光阑的组合形式，研究了激光束的光腰半径与卡塞格林望远系统的参数匹配问题。

Laser beams may cauterize and heal ulcers.

激光束可以烧灼和愈合溃疡。

In the case of read-only CDs, the substrate lies directly next to the reflection layer. In the case of a CD-WO, an absorption layer existsbetween the substrate and the reflection layer. This layer can be irreversibly modified through strong thermal influence, which changes the reflection properties of the laser beams.

就只读CD来说，亚层应紧接在反射层之下，而CD-WO中，在亚层和反射层之间还有一个吸收层，这一层在强热的作用下做不可逆修改，因而改变了激光束的反射特点。

The non-spherical lens is another shaping system that is used to collimate the beam of LD, and the theoretic performance could be perfect.

非球面柱透镜是另一类特殊结构的柱透镜，在用于半导体激光束准直时，理论上可以达到完全准直的效果。

With the computer simulation,the elliptic section cylinder lenses have been designed and used to collimate the semi-conductor laser beam .

利用计算机仿真，设计了相互垂直的椭圆截面柱透镜组来准直半导体激光束。

They collimate a semiconductor laser beam in two directions respectively .

采用光线矢量法设计了两个相互垂直的椭圆截面柱透镜组来准直半导体激光束。

By using the light ray vector method, the elliptic-section cylinder lenses have been designed to collimate the semiconductor laser beam.

采用光线矢量法设计了两个相互垂直的椭圆截面柱透镜组来准直半导体激光束。

But the accuracy of laser collimator is hard to increase for the influenceto laser beam in the atmosphere.

但激光束在大气中的准直还是受很多因素的影响而使得激光准直仪的精度难以提高。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。