| 单词 | optical instrument |
| 释义 | optical instrument (once / 40478 pages) n WORD FAMILY optical instrument: optical instruments USAGE EXAMPLESThe convention celebrating the optical instrument began Thursday at the Hilton Washington DC/Rockville Hotel & Executive Meeting Center and continues through Sunday. Washington Post(Apr 29, 2016) View the transit only through proper, solar-safe filters on optical instruments. Washington Post(Apr 30, 2016) The original Vantablack was a specialty carbon nanotube coating designed for use in space, to reduce the amount of stray light entering space-based optical instruments. Slate(Mar 29, 2016) n an instrument designed to aid vision Hypo|Hyper binoculars, field glasses, opera glasses an optical instrument designed for simultaneous use by both eyes esophagoscope, oesophagoscopean optical instrument for examining the inside of the esophagus jeweler's glassan optical instrument used by jewelers; has one or more lenses and is used to view features not readily seen periscopean optical instrument that provides a view of an otherwise obstructed field projectoran optical instrument that projects an enlarged image onto a screen sightsan optical instrument for aiding the eye in aiming, as on a firearm or surveying instrument eyeglasses, glasses, specs, spectaclesoptical instrument consisting of a frame that holds a pair of lenses for correcting defective vision prism spectroscope, spectroscopean optical instrument for spectrographic analysis bifocalseyeglasses having two focal lengths, one for near vision and the other for far vision bombsighta sighting device in an aircraft for aiming bombs epidiascopean optical projector that gives images of both transparent and opaque objects front projectora projector for digital input gogglestight-fitting spectacles worn to protect the eyes gun-sight, gunsighta sight used for aiming a gun lorgnetteeyeglasses that are held to the eyes with a long handle mass spectrometer, spectrometerspectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer cine projector, film projector, movie projectorprojects successive frames from a reel of film to create moving pictures overhead projectora projector operated by a speaker; projects the image over the speaker's head pince-nezspectacles clipped to the nose by a spring slide projectorprojector that projects an enlarged image of a slide onto a screen spectrographa spectroscope by which spectra can be photographed dark glasses, shades, sunglassesspectacles that are darkened or polarized to protect the eyes from the glare of the sun instrument a device that requires skill for proper use |
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英语词典包含147318条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。