激光

The absorption spectra together with the vibration Raman and reflection spectra of C〓 and C〓 mixture doped phosphate and fluophosphate laser glasses has been studied, and their structure characters are analyzed.

对掺C〓/C〓混合物的磷酸盐和氟磷酸盐激光玻璃进行了吸收光谱，Raman光谱和红外反射光谱的测试与分析，根据实验结果，初步推断了富勒烯在激光玻璃中可能的结合与结构特性。

When hit with a laser they can fluoresce for hours afterwards, thanks to defects in the diamond that absorb the laser energy and emit light of their own at a different wavelength.

FND用激光照射后在几个小时内可发出荧光，其原因是钻石上的瑕疵吸收了激光能量并以不同的波长发射自身的光线。

5Calibration of the laser optical axis of the basic principles and methods isdiscussed, laser target designator axis calibration device is designed, the key technologythat a large caliber, long focal distance from the axis parabolic reflector design is solved,and the cross target line which can be used for a wide variety of observation devices isdesigned, the final calibration accuracy is 0.05mrad.

5论述了激光光轴校正的基本原理和方法，设计了激光目标指示器光轴校正装置，解决了其中的关键技术：大口径、长焦距离轴抛物面反射镜的设计问题，并设计了可用于多种观瞄装置的十字靶标，最终的校正精度达0.05mrad。

In order to obtain the optimal process treatment of a laser-engraving technical, this study was to investigate the process efficiency relationships between wood species and speed, electric current and focal distance.

试验目的在于探讨木质材料激光雕刻时，木材的种类、切割速度、电流以及焦距等与加工质量之间的相关性，以获得木材激光雕刻最佳的工艺参数。

The results show that due to the effect of laser beam quality on focal beam waist radius,focal angle and focal length,laser beam quality decides the beam focusing ability and the processing capacity of laser system.

结果表明，光束质量对聚焦光束的焦斑、聚焦角和焦深的影响不仅体现了激光源的可聚焦性，而且也标志了激光源的可加工能力，这是聚焦系统和焦点位置在选择过程中应该考虑的重要因素。

The variation of focal spot size with the spatial phase perturbation and propagation distance has been analyzed quantitatively.The results indicate that the radius of focal spot increases with the propagation distance if once the threshold condition fulfilled.

讨论了强紫外激光在空气长程传输中所产生的受激旋转喇曼散射效应对其聚焦光斑形态的变化，定量分析了焦斑半径随入射强紫外激光的空间相位畸变及传输距离的变化。

The measured photosensitizer content index can be raised when photosensitizer is injected intravenously slowly during irradiation. Hot fomentation before irradiation can only raise photosensitizer content temporally, but cant increase the photosensitizer content throughout the treatment.

3表皮黑色素含量、扩张血管的深度是影响532nm激光光能流率在PWS皮肤中分布的主要因素，治疗中组织氧含量的变化对532nm激光在PWS皮肤中的光分布没有显著影响。

Free electron laser is a novel coherent light source. It has a wide tunable ability, a high output power, and a high quality light beam.

自由电子激光是一种新型相干光源，它的激光频率在很宽的范围连续可调谐，输出功率高，具有良好的光束质量。

The studies on free electron laser and quantum well materials are both the front domain of high-tech in nowadays. However, the studies on irradiation effects of QWM by FEL are limited, and the problem is very novel.

当前对自由电子激光和量子阱材料的研究同处于高科技的前沿，但自由电子激光对量子阱材料的辐照效应研究却进行得很少，因而这是一个相当新颖的课题。

Using the time-gain compensation technique to compensate for ultrasonic wave's weaking when transmitting in the air,and reduce the fluctuation of echo signal.The peak time detecting circuit which is composed of full-wave rectification circuit and differential circuit can detect the reach time of echo signal accurately.

和其他方法相比，如激光测距、微波测距等，由于声波在空气中传播速度远远小于光线和无线电波的传播速度，对于时间测量精度的要求远小于激光测距、微波测距等系统，因而超声波测距系统电路易实现、结构简单和造价低，且超声波在传播过程中不受烟雾、空气能见度等因素的影响，在各种场合均得到广泛应用。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。