直

So DOE is used in transmitting and receiving optics of laser radar,which can not only collimate laser beam,but also can transform and shape the laser wavefront.

将衍射光学元件用于激光雷达的光学系统上，不仅可以实现对激光光束的准直，同时还可以对光波波前进行变换和整形。

Among picosecond fluorescence spectroscopy setup, sample cell, one side is concave, and collimate optics system were designed and made. Which improve fluorescence collect rate 30%, and is key to experiment.

在荧光光谱装置中，设计制作了一侧为凹面的样品盒和准直光学系统，提高荧光的收集效率30%，对实验成功起了关键的作用。

To meet the technical requirements of KM6 solar simulator optical adjustment system, two kinds of schemes are put forward to collimate the semiconductor laser beam.

根据KM6太阳模拟器光学装校系统的技术要求，文章提出了半导体激光器输出光束的两套准直方案。

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。

Compared with the other laser testing device, here we use laser with special wavelength; a collimate large beam was used to measure the large area, so the data can reflect the relation of the transmission and content of ointment for the whole plaster.

本方法的特色在于特殊选定波长的激光发射器，而采用光学准直扩束器的目的是可以大面积测量，以反映出整块膏药的含膏量和透过率的关系。

Heteroaxial double half-cylindrical lens collimate beam of laser diode ［J］.

异轴双半圆柱透镜准直半导体激光光束［J］。

Double half-cylindrical lens collimate the beam of laser diode .

双半圆柱透镜准直半导体激光光束。

A transmitting antenna with tapered fiber is proposed to transform the divergence partially coherent light formed by multi-mode fiber to collimate light. This structure can produce a partially coherent light of low divergence and guarantee the output power of laser transfers completely. It is applicable to laser communication in atmosphere.

提出采用直锥形光纤作为大气激光通信的发射天线，将多模光纤输出的部分相干发散光束变换为准平行光束的方案，既能得到发散角很小的部分相干激光光束，又能保证激光器输出能量的完全传输。

The synchrotron radiation light source used in LIGA technique for deep lithography is becoming more and more important because of its unique qualities-(1) high brightness, usually being 10〓~10〓 times of common X-ray light source;(2) good collimate, the angle of divergence of synchrotron radiation light source could be compared with that of laser light source.

由于同步辐射光源具有（1）亮度高，比一般X射线源高10〓~10〓倍，（2）准直性好，辐射张角可以与激光相比的特点，因而，利用同步辐射光源作为LIGA技术中深度光刻光源正日益受到重视。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。