激光材料

A material thickness is measured without contact up to 50 times per second at any sheet speed even on difficult surfaces on which conventional spot laser triangulation sensors fall due to the surface structure.

任何板材，不论什么样的表面条件，其他常规斑激光三角测量传感器由于表面结构无法进行测量时，我们对材料厚度的无接触测量每秒可多达50次。

The process produces extremely precise, smooth-walled apertures with a natural taper that require no additional finishing processes.

和化学腐蚀及激光切割相比，电铸是一个附加工艺，电铸钢网是用电镀材料，通常为镍，在带负电孔型成像的卷筒，该工艺能形成精确光滑表面的孔，自然锥度另需精加工。

In contrast to chemical etching and laser cutting, electroforming is an additive process. Electroformed stencils are "grown" by electro-depositing a plating material, usually nickel, onto a mandrel carrying a negative, photo-resist image of the aperture pattern. The process produces extremely precise, smooth-walled apertures with a natural taper that require no additional finishing processes.

和化学腐蚀及激光切割相比，电铸是一个附加工艺，电铸钢网是用电镀材料，通常为镍，在带负电孔型成像的卷筒，该工艺能形成精确光滑表面的孔，自然锥度另需精加工。

Compared with that of powder metallurgy,the silver tin oxide electric contact materials fabricated by reactive synthesis shows the better anti-erosion ability.

研究了用反应合成法和粉末冶金法两种工艺制备的AgSnO2电接触材料经激光扫描后的微观结构差异。

Based on the design and fabrication principles for the high power laser reflector, an active cooling mirror was adopted to improve the beam quality by reducing the mirror thermal distortion which can control the mirror distortion less than 0.1 μm.

根据高功率激光反射镜的设计和制作原则，对反射镜的材料性能进行了分析，采用主动水冷铜镜来减小镜面热畸变使镜面变形控制在0.1 μm以内。

The relationships between strain and stress of several kinds of high strength fibers, such as Kevlar, Twaron and Dyneema were obtained, and the dependence of mechanical properties of fibers on the strain rate was gotten and explained from the microstructures and deformation mechanism of fibers. Then, the damage and failures of plates with the reinforcement of fibers under high velocity impacting were studied experimentally. Based on experimental results, a set of equations was presented to depicted the deceleration of penetrator. The dynamic response of fiber cluster and sandwich were simulated successfully with a new algorithm and code, which was developped by our group. The coupling effect of stress wave and thermal conduction could be considered with acceptable accuracy and CPU time.

其中，获得了以芳纶纤维为代表的7种纤维的动态应力应变关系，从材料微观机制解释了纤维束的应变率相关特征；得到了板材在高速冲击下的能量吸收机理，以及影响能量吸收机制转变的主要因素；发展了一种新型的原位光学测试技术，以之可以测量试件在冲击加载下的变形场及其演化，该技术除了在本项目应用外，还可以对剪切带的萌生演化、孔洞动态扩张规律进行较好的观察，以弥补相关研究中实验证据的缺乏；发展了含热传导的冲击动力学有限元程序，在侵彻、绝热剪切带、脉冲激光诱导结构破坏等问题的分析中得到了较好的应用。

Based on Valley's quasi-cw approximation, the writing and erasing of gratings in materials exhibiting bulk photovoltaic effect on illumination with short light pulses is investigated.

利用G.C.Valley的准连续光近似模型，研究了短脉冲激光在光伏光折变材料LiNbO3晶体中写入和擦除光折变光栅的过程，给出了空间电荷场随时间变化的表达式。

Spatiotemporal self-compression of high-intensity femtosecond pulses with linear and circular polarization in normally dispersive media is experimentally studied.

实验研究了圆偏振和线偏振高强度飞秒激光脉冲在正常色散材料中传输时的时空自压缩现象。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。