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- Numerical results demonstrate that laser generated surface acoustic wave is comprised with three components, namely surface skimming longitudinal wave, surface shear wave and Rayleigh wave. 数值结果表明:在激发的超声表面波中包括掠面纵波、表面横波和单极性的Rayleigh波等三种模式。
- Experimental and theoretical study on laser generated ultrasound in metallic and non-metallic ma-terials has been carried out. Discussed is the feasibility of the technique to nondestructive testing. 介绍固体中激光超声的实验和理论研究工作,讨论了激光超声技术在无损检测领域应用的可能性。
- When the diaphragm of the speaker generates sound, the sound waves which are reflexed from the rear board will be sent out by the reflex pipes. 当单体振膜发声时,其声音打到后板所反弹的声波,藉由反射导管将反相的声波传递出来。
- Its definitions, generally sound and often discriminating, are at times truly Johnsonian. 它的定义是通常的发音并经常是有识别力的,却有时真的是约翰逊流派的。
- The cooling of instruments such as infrared detector, LBD, semi-conductive laser generator, CCD, etc. 温差电致冷组件在卫星、雷达、光纤通信、高精密科学仪器上获得了愈来愈多的应用。
- Conclusion This precision constant-temperature water circulator can make an ideal temperature environment available for laser generator. 结论:该恒温循环水温度控制系统可以保证半导体激光器的正常工作温度。
- Objective To observe the sound attenuation effect of several kinds of hearing protectors (earplugs and earmuffs) in an infrasound generator sound field. 目的观察几种护耳器(耳塞、耳罩)对次声发生器次声场的隔声效果。
- A kind of closed enclosure, mainly adds another low frequent speaker.When it vibrates to generate sound, the passive radiator diaphragm is pushed by air. 属于密闭式音箱,主要多增加一支只有振膜的单体(低音单体,当低音振动发声时,其藉由空气来推动背辐式振膜的延伸。
- Also this paper inspires an interest for deeper and more complete exploration of ultraviolet laser generation from the multiplet 2P3/2 serving as a laser level in Er3+:YAlO3. 本论文的研究结果也充分显示了2P3/2能级的亚稳态特征,从而为进一步研究以该能级为激光工作能级的Er3+:YAlO3晶体的紫外激光行为起到引导作用。
- Digital system controlled laser machine, equipped with DIAMONDTM K250 laser generator, can process alumina substrates and AlN substrates upon request through scribing, cutting, and drilling. 我司联合国内资深公司共同设计制造的激光划线机,能加工各种规格的氧化铝、化铝陶瓷基板。该设备精密的数控定位系统,优良的激光发生系统,保证了进行划线、孔、槽等各种加工工艺的精度。
- Oversized dogs should not be penalized when general soundness and proportion are in favor. 如果结构坚固、比例匀称,但体型过大的情况不属于缺陷。
- A beam of light generated by a laser. 由激光器发出的一束光。
- WISL (What the Internet Sounds Like) - WISL performs network performance measurements and dynamically generates sounds (music) that represent the current state of the network. 可以执行网络性能度量,动态生成代表当前网络状态的声音(音乐)。
- Study on Laser Generating Ultrasonic Waves 激光致声技术的研究
- laser generation of acoustic waves 激光致声
- Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon 双光子共振四波差频产生的真空紫外激光特性研究
- Numerical Analysis of the Surface Notch Inspection by Laser Generated Rayleigh Waves on Aluminum Plate 激光声表面波检测铝板表面凹痕的数值研究
- Mass spring lattice modeling of the laser generated surface acoustic waves in a plate with surface notch 应用弹性振子点阵模型数值模拟表面带裂痕材料中的激光激发声表面波
- There is no single laser fit for all purposes. 没有单一种激光器能适用于各种用途。
- How does a laser beam vaporize steel? 激光束是怎样使钢气化的?