光束

A new four-beam turbidimeter was designed.

设计了一种新型四光束在线浊度仪。

We made the light absorption coefficient measurement system with Nuclepore filter which were used to collected aerosol particles. The system has one laser beam which is split into two laser beam, one being information light which transfer through glass pipe, the other being reference light which transfer directly through atmosphere. so the measurement system could well eliminate the effect of all kinds of measurement errors which were caused by optical ullage and circuit noises and power fluction.

本测量系统利用核孔过滤膜采集气溶胶粒子，测量系统的光路由同一光束分为两路光组成，一路为信号光，通过光管传输，另一路为参考光，通过信号光和参考光相比很好地消除了测量系统中由于光管损耗、电路放大倍数的差异及光功率起伏等因素所引入的误差对吸收系数测量的影响。

In this dissertation, the correspondence is solved quickly and unambiguously with encoded structured light.

本文利用面结构编码光束解决对应点的匹配问题，实现了三维物体坐标的测量。

Light engine scanning is in the way of spurring reflects to circle with the machine unit. The rule is easy, sweep range greatly, yet the problem is that the machine system is the bad accuracy and the stability is harder domination and so on.

光机扫描是用机械装置驱动反射系统旋转以实现激光光束的扫描，其原理简单，扫描范围大，但机械系统存在机构精度差、稳定性较难控制等不足。

In the light of the soft-ness of fibre bunch,the detector and refrigerator module can be placed at a distance from universal hold-er by optical fibre coupling technique.

利用纤维光束的柔软性，应用光纤耦合技术，可以让探测器和致冷器组件放在离万向支架一定距离上。

The unprinted credit card inspection system takes the advantage of the collimation characteristic of laser. We use a beam expander to expand a laser beam broad enough to cover the whole credit card without losing its collimation characteristic.

其信用卡的刮痕检测系统，利用雷射平行光的特性与扩束器的原理，将雷射光束放大到足以涵盖整张待测的信用卡，然后将影像反射在一屏幕上以减少雷射光强度，进而得以清晰撷取刮痕影像。

In order to meet the need of laser doppler velocimeter inland,a dual-beam direction recognizable LDV is designed in this papper.

针对国内对激光多普勒测速仪的需求，本文设计并研制出一套双光束可识别方向的激光多普勒测速仪。

Compared the vertical parallax of models reconstructed by using the elements of exterior orientation obtained by GPS-supported bundle block adjustment with that determined by position and orientation system, the vertical parallaxes of models are analyzed.

通过比较利用GPS辅助光束法区域网平差获得的像片外方位元素和POS提供的像片外方位元素重建立体模型所产生的模型上下视差，分析了POS系统误差对模型上下视差的影响。

A device which transmits an extremely narrow and coherent beam of electromagnetic energy in the visible light spectrum.

一种能够发射可见光谱电磁能的极细的相干光束的装置。

The experimental results show that the system has good beam quality, and the wavefront aberration mainly come from the compressor.

结果表明，该激光装置具有良好的光束质量，其主要波前畸变来源于压缩池。

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％。