- laser beam drilling
- 激光钻孔
English-Chinese machine dictionary (英汉机械大词典). 2013.
English-Chinese machine dictionary (英汉机械大词典). 2013.
Laser cutting — process on a sheet of steel. CAD (top) and stainless steel laser cut part (bottom) Laser cutting is a technology that uses a laser to cut materials, an … Wikipedia
Laser ablation — is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates. At high laser flux, the… … Wikipedia
laser — /lay zeuhr/, n. Physics. a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase. Also called optical maser. [1955 60; … Universalium
Laser diode — Top: a packaged laser diode shown with a penny for scale. Bottom: the laser diode chip is removed from the above package and placed on the eye of a needle for scale … Wikipedia
Fabrication of structural steel by plasma and laser cutting — Fabrication of dimensional (non flat) structural steel elements has historically been performed by sequential operations involving sawing, drilling and high temperature flame cutting to remove material. Each of these operations is performed on… … Wikipedia
New drilling technologies — The latest study of Massachusetts Institute of Technology The Future of Geothermal Energy – Impact of Enhanced Geothermal Systems (EGS) on the United States in the 21st Century (2006) points out the essential importance of developing an… … Wikipedia
Excimer laser — An excimer laser (sometimes, and more correctly, called an exciplex laser) is a form of ultraviolet laser which is commonly used in eye surgery and semiconductor manufacturing. The term excimer is short for excited dimer , while exciplex is short … Wikipedia
Chemical oxygen iodine laser — Chemical oxygen iodine laser, or COIL, is an infrared chemical laser. As the beam is infrared, it cannot be seen with the naked eye. It is capable of output power scaling up to megawatts in continuous mode[citation needed]. Its output wavelength… … Wikipedia
Chemical laser — A chemical laser is a laser that obtains its energy from a chemical reaction. Chemical lasers can achieve continuous wave output with power reaching to megawatt levels. They are used in industry for cutting and drilling. Common examples of… … Wikipedia
Nd:YAG laser — with lid open showing frequency doubled 532 nm green light Nd:YAG laser rod … Wikipedia
tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening … Universalium