| 单词 | laser |
| 释义 | laser (leɪzəʳ ) Word forms: lasers , lasering, lasered 1. countable noun B2 A laser is a narrow beam of concentrated light produced by a special machine. It is used for cutting very hard materials, and in many technical fields such as surgery and telecommunications. ...new laser technology. Researchers realised that a tunable laser beam might be useful in surgery. 2. countable noun B2 A laser is a machine that produces a laser beam. ...the first-ever laser, built in 1960. 3. verb If you have part of your body lasered, you have it treated using a laser. I had my eyes lasered. I was shortsighted and now I'm not. [have noun VERB-ed] British men are shaving, waxing and lasering their body hair like never before. [VERB noun] Collocations: fire a laser The scientists will then fire a laser at the quartz and see whether the scattering of the light shows signs of the object moving. Retrieved from Wikipedia CC BY-SA 3.0 To fire the laser and track the beam to the target, the helicopter would need to hover for a few seconds to ensure a direct hit. Times, Sunday Times The pilot intended to fire a laser at proper strafe target, located on the range. Retrieved from Wikipedia CC BY-SA 3.0 Products that fire a laser, as opposed to a solid projectile, have become increasingly popular. Retrieved from Wikipedia CC BY-SA 3.0 To build a picture, the camera fires the laser 4,000 times each second, at many different angles. Times, Sunday Times The efficiency of a free-electron laser can be enhanced by the phase jump method. 2017, 'Phase jump method for efficiency enhancement in free-electron lasers', Physical Review Accelerators and Beams We investigate the quantum regime of a high-gain free-electron laser starting from noise. 2006, 'Quantum regime of free electron lasers starting from noise', Physical Review Special Topics. Accelerators and Beams We also derive an analytical expression, which determines the bandwidth of the free-electron laser. 2012, 'Free-electron laser growing modes and their bandwidths', Physical Review Special Topics. Accelerators and Beams The configuration may be applied to free-electron lasers and high-order laser harmonics. 2015, 'Compression of Extreme-Ultraviolet Ultrashort Pulses by Grating Configurations', Journal of Spectroscopy Would permanent laser hair removal be a financially viable alternative? Times, Sunday Times (2009) For instance, laser hair removal is less successful on some people than others. Times, Sunday Times (2008) I am also seeing laser hair removal for hairy toes, and hammer toes corrected. The Sun (2012) A new cooling system makes this the first pain-free laser hair removal system. Times, Sunday Times (2014) The robot can even be used to make boardroom presentations - coming equipped with a laser pointer to gesture at charts and documents. Times, Sunday Times A laser pointer could be installed on the forehead of the wig so that a presenter could highlight relevant information on a projected slide. Times, Sunday Times It also has a laser pointer for teasing pet cats while their owners are at work. Times, Sunday Times Take a laptop, a webcam, a 3,000 projector, an extra-bright laser pointer and a bit of free software. Times, Sunday Times The internet retailer also offered a 'military-grade powerful laser pen' for 99p, plus 1.99 postage, and a red laser pointer with a one-mile range for 2.89. Times, Sunday Times Such laser projection techniques are used in handheld projectors, planetariums, and for flight simulators and other virtual reality applications. Retrieved from Wikipedia CC BY-SA 3.0 As the technology matures and reduces in price, laser projection looks promising for dome projection as it offers bright images, large dynamic range and a very wide color space. Retrieved from Wikipedia CC BY-SA 3.0 In the early 1990s he specialised in large scale high quality laser projections. Retrieved from Wikipedia CC BY-SA 3.0 Along with a mix of live actors and puppets, the show features effects such as light and laser projections on the auditorium walls and light rain over the audience. Retrieved from Wikipedia CC BY-SA 3.0 A large part of the work was controlling the laser pulse to prevent the pellet from tearing itself apart. Times, Sunday Times As a result of the camera's speed, it can tell how far the photons in the initial laser pulse have travelled when they arrive back. Times, Sunday Times Under a laser pulse, each electron fired out a package of light called a photon that carried a magnetic signature, known as 'spin'. Times, Sunday Times For example, one can create substrate that only upon the enzymatic activity shines light when activated (with a laser pulse). Retrieved from Wikipedia CC BY-SA 3.0 A laser pulse removed an electron from every atom without disrupting the crystalline structure. Retrieved from Wikipedia CC BY-SA 3.0 The vehicle works using a rotating gadget on its roof called a 'lidar' - a 50,000 laser radar that acts as the car's eyes. Times, Sunday Times It also has two cameras for still photos and laser radar sensors to measure distances. Times, Sunday Times Above these, mounted on a small turret, was a whirling laser radar, a 'lidar', spinning like a grey cotton reel, its lasers measuring the distances of nearby objects. Times, Sunday Times A word of warning too: laser resurfacing isn't recommended for those with a darker skin tone. Times, Sunday Times Common techniques used for this are laser resurfacing, dermabrasion (physical or chemical exfoliation), and surgical removal. Retrieved from Wikipedia CC BY-SA 3.0 These include dermabrasion, topical application of retinoic acid, carbon dioxide laser resurfacing, hyaluronic acid injection into the dermis, imiquimod, tacrolimus ointment and topical oestrogen therapy. Retrieved from Wikipedia CC BY-SA 3.0 Some have found relief in laser resurfacing that burns off the top layer of the epidermis, allowing healthy non-affected skin to regrow in its place. Retrieved from Wikipedia CC BY-SA 3.0 A new modality, fractional laser resurfacing, offers a novel approach to treating striae. Retrieved from Wikipedia CC BY-SA 3.0 A laser scan of the whole of the eye's retina, producing a high-definition, multicolour image. Times, Sunday Times Afterwards, microarrays are analyzed using a laser scan and spot intensities detected and quantified. Retrieved from Wikipedia CC BY-SA 3.0 Thanks to the laser scans, the teams hope to arrive at each of the new racetracks with their car set-ups within 5 per cent of perfection. Times, Sunday Times Lasers scan individual haricot beans for imperfections, while hundreds of cans a minute are packaged, waiting for driverless forklift trucks to whisk them away. Times, Sunday Times The company uses laser scans to pick the best fibres for length, strength, elasticity and softness. Times, Sunday Times They allegedly used a laser scanner linked to a computer to measure the speed of the ball and hence the numbers most likely to come up. Times, Sunday Times The other vehicle 'flies' at four times the speed of similar craft and carries geophysical instruments, lights, high-definition cameras and a laser scanner. Times, Sunday Times The head-mounted laser scanner measures distance by time-of-flight. Retrieved from Wikipedia CC BY-SA 3.0 While monochrome printers only use one laser scanner assembly, color printers often have two or more. Retrieved from Wikipedia CC BY-SA 3.0 But the dodgy tickets will not get past the stadium's laser scanners. The Sun A laser sensor should stop the user crashing into things. Times, Sunday Times Minor damage was inflicted on the platform during this event, confirming the validity of the reading made by a downwards-pointing laser sensor. Retrieved from Wikipedia CC BY-SA 3.0 It uses laser sensor that monitors an area approximately directly in front of the vehicle. Retrieved from Wikipedia CC BY-SA 3.0 It has a built-in ambient light sensor, laser sensor, and sound sensor. Retrieved from Wikipedia CC BY-SA 3.0 The laser sensor detects changes in apparent terrain height such as the contour of a vehicle. Retrieved from Wikipedia CC BY-SA 3.0 The laser system works by focusing on removing dirt and bacteria (you can smell it burning during the procedure) from open pores and blackheads. Times, Sunday Times The military source said that there remained critical obstacles to having a workable laser system on a helicopter. Times, Sunday Times The board includes a laser system which ensures stabilization, in addition to an electromagnetic system which makes the levitation possible. Retrieved from Wikipedia CC BY-SA 3.0 Optical systems providing the rapid switching of multiple beams have allowed the fibre laser system to be dominant in this market. Retrieved from Wikipedia CC BY-SA 3.0 The pod housed an array of over 2000 small holes containing optical sensors to detect the laser system. Retrieved from Wikipedia CC BY-SA 3.0 Plus, the lucky winners will also be able to do battle at a space-themed laser tag experience, followed by dinner at a top family restaurant. The Sun As well as 22 bedrooms, it has a nightclub, laser tag, games room and salt spa treatments using salt from the surrounding sea. Times, Sunday Times When evening rolls around it becomes the battlefield for laser tag. The Sun There's another nine plush bedrooms but it's the extras that will blow you away, including a 1,300sqft laser tag room, separate laser maze, arcade games room and home theatre. The Sun Despite surroundings that are distinctly bleak, the base has sports facilities including the only cricket pitch on the islands, karting, climbing wall, bowling alley and a laser tag game. Times, Sunday Times It can detect laser rangefinders and laser target designators and responds automatically by triggering acoustic alarms, smoke generators and other countermeasure systems. Retrieved from Wikipedia CC BY-SA 3.0 Other options include a laser target indicator to be mounted in front of the trigger guard. Retrieved from Wikipedia CC BY-SA 3.0 It requires a laser target designator, from either an airborne or land based source, to paint a target. Retrieved from Wikipedia CC BY-SA 3.0 The current sensor configuration of a day/night turret with a laser target designator will remain an option. Retrieved from Wikipedia CC BY-SA 3.0 Laser target it has multiple pica tinny rails to facilitate various add-on equipments needed for various missions and thus improving versatility. Retrieved from Wikipedia CC BY-SA 3.0 Scientists have developed a laser technique that can melt fat under human skin. Times, Sunday Times The laser technique also results in a much more robust print, less susceptible to fade from strong light or ozone. Times, Sunday Times He has since had this tattoo removed by a plastic surgeon using a laser technique. Retrieved from Wikipedia CC BY-SA 3.0 Like other laser techniques, it resurfaces the skin and stimulates collagen in the underlying dermis, plumping out fine lines and wrinkles. Times, Sunday Times Starved of the high-end silicon and laser technology it needs to make its products, the company faces potential oblivion. Times, Sunday Times Airports are employing the latest laser technology to scare wildlife off runways after record numbers of potentially lethal bird strikes. Times, Sunday Times But he was ahead of his time and his invention only became commercially viable two decades later when computer and laser technology had caught up enough to make barcoding feasible. Times, Sunday Times Satellite navigation systems and laser technology will allow the electric-powered vehicles to memorise the layout of the airfield and work out the shortest route to the aircraft hold. Times,Sunday Times Even better, it's clinically proven safe and effective as it uses the same diode laser technology used by professionals to target hair follicles and stop hair from growing back. Times, Sunday Times The newspaper ads promised readers laser therapy technology and 'strand by strand' replacement procedures to treat thinning hair. The Sun For a permanent solution, you could consider laser therapy. The Sun A try-this-at-home low-level laser therapy unit to boost follicular activity. Times, Sunday Times Treatment costs from 20-60 for injections, 125 for micro-dermabrasion and 3,000 for laser therapy. Times, Sunday Times If you feel self-conscious about them you could try laser therapy, which can help reduce these shadows. Times, Sunday Times Cauterising of wounds with laser vision just isn't that romantic. Times, Sunday Times Lastly, a word on eyebrows: unless you have laser vision, don't do them yourself. Times, Sunday Times His laser vision also possessed a concussive aspect that could batter targets and demolish walls. Retrieved from Wikipedia CC BY-SA 3.0 With his laser vision, he could project powerful red laser beams from his eyes. Retrieved from Wikipedia CC BY-SA 3.0 Its laser vision protects it from aerial attack, and its internal furnace can disintegrate oncoming rockets. Retrieved from Wikipedia CC BY-SA 3.0 Masers spread out more rapidly than optical lasers owing to their longer wavelength, and so would not have as long an effective range. Retrieved from Wikipedia CC BY-SA 3.0 These materials would make it easier to develop numerous practical devices, including optical lasers, optical computers, and solar cells. Retrieved from Wikipedia CC BY-SA 3.0 The technique involves using optical lasers to create an interference pattern, which acts as a lattice, in which ions or atoms can be placed at very low temperatures. Retrieved from Wikipedia CC BY-SA 3.0 Hugely powerful laser pens must be banned and their online sale prohibited. The Sun The internet retailer also offered a 'military-grade powerful laser pen' for 99p, plus 1.99 postage, and a red laser pointer with a one-mile range for 2.89. Times, Sunday Times However, the hole made by powerful laser had rough uneven edges, as if the hole was broken through, not melted. Retrieved from Wikipedia CC BY-SA 3.0 Her other light-based powers include a powerful laser blast and a photon force field. Retrieved from Wikipedia CC BY-SA 3.0 This robot could also blast a powerful laser from the sphere-like apparatus in his forehead. Retrieved from Wikipedia CC BY-SA 3.0 The cameras shine a laser beam through exhaust fumes and use reflected light to calculate levels of toxins such as nitrogen dioxide. Times, Sunday Times It will be a criminal offence to shine a laser at an aircraft deliberately or without taking 'reasonable precautions to avoid doing so'. Times, Sunday Times One threw a brick at a bus and another shone a laser at a police car. The Sun He and an accomplice had shone a laser at a bus driver, spat at filmgoers and threw fireworks at cars. The Sun A similar pattern may be seen by shining a laser pointer at a compact disc. Retrieved from Wikipedia CC BY-SA 3.0 Translations: Chinese: 激光 Japanese: レーザー |
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