查询词典 light selecting

Selecting Distributed Feedback Laser Diode as light resource and the gas absorbing cell with fiber pigtail as its sensor, and using lock in amplifier to distill signal and harmonic measure technology to process that distilled faint signals, we design an instrument of remote and on-line measuring acetylene.

选用分布反馈式半导体激光器作为激发光源，带尾纤的气体吸收气室作为传感器的探测头，以及锁相放大器来提取信号，并通过谐波检测技术对所提取的微弱信号进行处理，设计了一套远距离在线测量乙炔气体的监测仪器。

The factors for selecting the wavelength ranges to be measured are considered. The experiment equipment is introduced, with six key issues stressed, radiant power of light source should be higher, width of the I/O slits of the monochromator should be reasonable and both of them should be adjusted to an equal width, the focal length of the convergent lens should be longer, the exit of humidistat should be square, the function of vacuum pump and fog collecting hood is important, and the wavelength adjustment of the monochromator and the auto-record of the measuring signal should be controlled by a micro-computer.

讨论了实验中光波长范围的一些选择因素，详细介绍了实验装置，特别强调了实验装置中的6个要点：即光源的辐射功率要大；单色仪的出入射狭缝要合理且两者宽度应调成一致；会聚透镜的焦距要大；加湿器最后出口的孔必须是方的；真空泵和雾气收集罩的作用；微机控制单色仪波长鼓及测量信号的自动记录。

The maximum absorption peak was at long wavelength (＞650nm), extinction coefficient achieves 10〓 degree, which was one degree higher than HpD. The study has revealed that CPD photosensitizer appeared blue movement under the relevant body environment. The spectra parameters provided basis for selecting light source of PDT. Measurement system which measured singlet oxygen and its quantum yields within the infare range had been set up and the quantum yields of singlet oxygen for CPD were reported: the quantum yields of singlet oxygen for CPD〓 was the highest (φ=0.83) while he quantum yields of singlet oxygen for CPD〓 was the lowest (φ=0.83). Photobleaching's half life time was studied.

给出了此类光敏剂的光谱指认和光谱参数：其吸收光谱峰值位于长波红光区(＞650nm)，摩尔消光系数达10〓LmoL〓cm〓量级，比血卟啉衍生物高出一个数量级；研究揭示了此类光敏剂在近似体内环境下光吸收的蓝移现象，为光动力治疗光源的选择提供了依据；建立了在近红外光谱区中测定敏化单态氧的光谱和量子产率测量系统，报导了该类光敏剂敏化单态氧的量子产率，其中CPD〓的单态氧量子产率最高(φ＝0.83)，CPD〓的单态氧量子产率最低(φ＝0.51)；测定了二氢卟吩类光敏剂的光漂白半衰期。

There were resembled mechanizm of the moth selecting and avoiding some monochromatic light or intensity level under two lights.

4棉铃虫蛾的趋光、避光反应行为具有相似的波长及光强度选择机制。

The user interface 6 may include an eject button for manually unloading removable media; up/down buttons for navigating a list of items, enter/exit buttons for selecting items or exiting from a menu or list; one or more status displays, such as a light or LED, a numeric display, and alphanumeric display, etc.

用户界面6可包含用于手动卸载可更换介质的弹出按钮；用于对项目列表导航的上／下按钮；用于选择项目或者离开菜单或列表的进入／退出按钮；一个或多个状态显示，例如灯或LED、数字显示和文字数字显示，等等。

So when the wavelength of the incident light changes, only the position of rhomb-type retarder need to be changed to allow the light to represent oblique incidence in the front of rhomb, and then selecting suitable incident angle can compensate the dispersion phase deviation, and make the same rhomb possess standard λ/4 phase retarder under all different wavelengths.

当入射光的波长改变时，只需改变菱体延迟器的方位，让光线在菱体的前端面上斜入射，适当选取入射角，就可以补偿相位延迟的色散偏差，使同一菱体达到对不同波长都满足λ/4相位延迟。

In calibration experimentation, we obtain calibration curve of oxygen saturation scope from 35 percent to 100 percent. And calibration curves of two kinds of sensor of two different wavelengths of light(660-940nm or 730-830nm) are found. And by analysis selecting the right sensor do vernix experimentation. The result of the effect of vernix is found.

在定标实验中，标定了血氧在35%~100%范围内的血氧饱和度定标曲线；同时得到两种不同波长段（660－940nm与730－850nm）传感器的定标曲线，通过分析两种定标曲线选择其中适合的传感器进行胎脂实验，并且得到了胎脂影响的结果。

The top three reasons of did not visit a doctor were the "self-judgment of a light sickness","medical care costing too much","self-treatment".According to the two surveys,the medical units of regular attendance were community health service centers.In 2007,the top three reasons of the participants when selecting a hospital to see a doctor were "near home and convenience"(61.62%),"with reimbursement of medical cost"(59.73%),"better medical technology and equipment"(21.13%).

未就诊原因的前3位分别为自感病轻、医疗费用太高、自我医疗。2次随访调查结果表明，该社区居民经常就诊机构均为社区卫生服务中心。2007年随访结果显示，选择医院就诊原因的前3位分别为离家近方便占61.62%，可以报销医疗费占58.33%，医疗技术和设备好占21.13%；基线调查、2006和2007年随访结果显示，医疗费用包括药费、治疗费、检查费等均呈不断下降趋势，差异均有统计学意义（P.05）。

The stable and reliable operation voltage of the probe can be given by the following methods:(1) 20% light coupling efficiency is obtained by direct coupling of LD-optical fiber.(2) The light power is transmitted by multi-model optical fiber.(3) The largest photo-electric conversion efficiency is achieved by selecting the transformer regulation of step-up transformer.(4) The stable light intensity is achieved by using LD light feedback of driving circuit and refrigeration.

通过下述方法可提供稳定、可靠的探头工作电压：LD—光纤的直接耦合方式，可实现20％左右的光耦合效率；采用多模光纤传输功率；选择升压变压器最佳变比提高光电转换效率；采取LD驱动电路光反馈以及致冷措施使其发光幅值稳定。

This means that to better extract dissipation strength with light particle multiplicities as a probe, it is important to select the compound systems with low spins, in addition to selecting a proper kind of particles for the systems with different isospins.

因此 ，为了更准确地用粒子多重性来提取核耗散系数，选择一个低自旋的复合系统是重要的

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。