grating造句
(151) METHODS: Retina MTF of two groups of people with emmetropia and ametropia were measured by means of a grating and parallel plate respectively. Then the measured MTF were compared and analyzed.
(152) The degree of electronic angle measurement are mainly coded dial plate , grating angle measurement dial and dynamic disks in three forms.
(153) The refractive index distribution function of long period fiber grating (LPG), which is ultraviolet written by amplitude mask, is a rectangular wave in the core region.
(154) In this article, the phenol-sulfuric acid method combined with caramelization - grating photometer method is used to determine and monitor the content of sugar in algae solution.
(155) The principle of measuring the light velocity with the method of wave modulation by ultrasonic diffraction crystal grating is analysed, and the experiment method is introduced.
(156) Grating is placed in image space of objective lens, and used as the shearing part. Light wave from reference object and measured object interfered at the image space.
(157) Contrast, spatial frequency, presentation time, moving velocity and phase reversal frequency of each grating are controlled independently.
(158) On the basis of Fraunhofer diffraction theory, the diffraction patterns of a Varied Line-space(VLS) grating were obtained for incidence beam in parallel and uniform.
(159) The method provides a new way to obtain a large diameter, high precision, high resolution mask of metrological radial grating.
(160) In order to achieve flat multi-wavelength output, a long-period fiber grating with loss peak at 1530 nm is used to obtain flat gain spectrum.
(161) A method of digital coding of grating by using color strips is presented.
(162) The grating spectrograph and prism spectrograph were used and analyze the visible spectra of Cu - based alloys.
(163) Discusses the design of cold light illuminator and the design of lens used in grating projection.
(164) A broadband infrared grating scan spectral radiometer, whose measurement range is 1～20 μ m, has been developed.
(165) Kinematic dynamic parameter tester and a kind of grating transducer developed recently are presented.
(166) A digital audio Compact Disc (CD)is demonstrated as a reflection grating in teaching, and characteristics of CD is given.
(167) When the laser beam goes through the diffraction grating, it is split up into a central bright beam plus a number of side beams.
(168) Fiber grating sensing and monitoring technology has such advantages as strong anti interfere performance, good long term stability, absolute value measuring and distributing sensing, etc.
(169) Offer yarn dyed spun silk and color grating spun silk with various specs.
(170) Theoretical analysis shows that the number of working wavelength will increase with the increment of the harmonic number of the harmonic blazed grating.
(171) It presents the characteristics of transmissive laser Moire signals and builds mathematic model of two grating diffraction.
(172) The limitation of scalar method for diffractive grating is evaluated by comparison with rigorous coupled - wave analysis.
(173) Grating, shelf, burglarproof doors and windows,[www.] snowproofing fence and parking apron.
(174) Fiber Bragg grating (FBG) is an optical fiber passive device and develops quickly in the last decade.
(175) The influence on reflective spectrum of fiber grating with nonuniform temperature variation field is discussed.
(176) The second order diffraction light of Rayleigh scattering light, Raman light, diffused light and the fluorescence diffracted from the grating have been discussed.
(177) First, high-precision optical grating and encoder disk is used as a detection device, which measures linear displacement and angular displacement of NC mechanism, and then collects error data.
(178) It's unnecessary to collect deformed grating images of object reference plane, which reduces operation steps and takes no solution for the phase of object reference plane.
(179) As the key device of a DWDM system, Etching Diffraction Grating (EDG) is one of the most potential types of planar waveguide DWDM devices.
(180) A novel photorefractive nonlinear optics model was presented based on an optical beam erasing refractive index grating and two- beam coupling.
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