暗楔 的英文怎麼說
中文拼音 [ànxiē]
暗楔
英文
nose key-
On the contrary, his eyes wet with tears, pierre looked joyously at this bright comet, which seemed as though after flying with inconceivable swiftness through infinite space in a parabola, it had suddenly, like an arrow piercing the earth, stuck fast at one chosen spot in the black sky, and stayed there, vigorously tossing up its tail, shining and playing with its white light among the countless other twinkling stars
與之相反，皮埃爾興高采烈地睜開他那雙被淚水沾濕的眼睛，凝視著這顆明亮的彗星，它彷彿正以非言語所能形容的速度沿著一條拋物線飛過這遼闊的空間，忽然它像一枝射進土中的利箭，在黑暗的天空楔入它所選定的地方，停止不動，它使盡全力地翹起尾巴，在無數閃爍的星星之間炫耀自己的白光。Z45t lowering stem vavle - changmao
Z45t型暗桿楔式閘閥- changmaoZ45t lowering stem vavle
Z45t型暗桿楔式閘閥Two wedge interferometers are designed that the thickness of one is higher than the other. so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift, but the incident incoherent light only result in consistent intensity signal. through a differentiating amplifier, two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals. this method largely improves the system and the ability of detection. the spacing of line fringes is a function of incident laser wavelength, by analyzing, we can extract the wavelength of incident laser. the optical unit analyzing and results also simulated with matlab
當背景光入射時，直接穿過干涉儀，僅發生強度的衰減，在兩個探測平面上產生幅度基本一致的灰度信號，通過差分放大器，相消為零，從而抑制了背景干擾。當激光信號入射，穿過干涉儀時受到調制，在探測平面上產生干涉條紋。通過所設計的存在平均厚度差的雙楔形干涉儀，兩路干涉條紋圖案出現相對移位：在兩個探測平面對應的位置上，一路出現亮紋，另一路出現暗紋。分享友人