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31. In this paper, using the generalized HuygensFresnel diffraction integral, the focusing properties of twisted GaussianSchell model beams through an aperture lens have been studied in detail.

32. The effects of lighting wavelength, coherent coefficient, aperture number and defocusing to image quality can be studied with this method.

33. However, the nonlinearity of the octopole magnet changes the dynamic aperture, and lowers the injection efficiency.

34. If you know the focal ratio but not the focal length, you can calculate it: focal length is the aperture (in mm) times the focal ratio.

35. The combination of telephoto capabilities and an f/2.8 aperture throughout the zoom range up to 500mm makes this a great lens for wildlife, sports and for you stargazers, astrophotography.

36. Moreover, cathode emission is quite sensitive to structure parameters such as dielectric layer' thickness, anode voltage and gate aperture; therefore, it is hard to guarantee the emission uniformity.

37. However, you don't expect weak quality of the maximum relative aperture, high level of chromatic aberration, significant coma and noticeable astigmatism along with huge vignetting.

38. Coefficients of dynamic stress concentration change with lining aperture, thickness of lining, wave number and type of lining.

39. The first meridian circle of China has been installed at CSAO in April 1990. This horizontal reflecting transit circle with 240ram effective aperture is developed by CSAO, NAIF and CUO.

40. We focus on the focal properties including the intensity and the partially coherent and polarized properties of such partially coherent vortex beams through a high numerical aperture objective.

40. Sentencedict.com try its best to gather and create good sentences.

41. Single Phase Center Multiple Beams(SPCMB) technique is one of solutions to implement high resolution wide swath spaceborne synthetic aperture radar systems.

42. According to elastic shell theory, the paper presents several theoretical models of large aperture optical cell.

43. Methods The distraction system of mid-facial skeleton consisted of a face-bow, the elastic loops and a device that hitched to bone holes made in the aperture rim.

44. The aperture size (area of the aperture) of a lens could be calculated from focal length and the correspondent f-number.

45. As an example of applications, numerical calculation is performed to calculate the losses of Bessel-Gaussian beams propagating through a circular aperture.

46. When viewing extended objects, the apparent brightness seen in the eyepiece is a function only of aperture and magnification, it is not related to focal ratio.

47. In bandwidth maximum value correspondence incidence angle foundation, when reducing incident angle, the transmittance spectrum move to long-wave band and appear hollow aperture.

48. Because raw materials production and capacity the link exist safe hidden danger, the civic architecture concentrate of plus, set off the aperture clear lamp to kindle fire hazard very easily.

49. In this paper, DOA is estimated with non-uniform linear antenna array (NULA) instead of ULA, so as to achieve a much larger aperture with the same amount of antenna elements.

50. The air gap capacitance sensors with distinct composition have been developed for reducing aperture effect.

51. The effect of quantification noise, saturation noise and bit error noise of synthetic aperture radar(SAR)raw data on the signal to noise ratio of distributed targets is analyzed.

52. The relation between numerical aperture and the passing power rate of semiconductor laser in collimating system has been studied through the parameter equations of fundamental mode Gaussian beam.

53. A bottom detection method used in the multibeam bathymeter sonar is introduced. The method is based on the separate aperture method, which is associated with phase information.

54. To obtain rapidness in batch measuring of aperture, a system of electronic plug gauge, based on RIM-FODS, was put forward.

55. The characteristics and design methods of WFOV and large relative aperture underwater photography objective under weak illumination are introduced.

56. In this paper, distribution functions of light intensity for single slit, many slits (plane gratings) and circular aperture are derived from vector model of vibration.

57. Azimuth resolution of meter wave radar can be improved by using super resolution spectrum estimation methods without extending the antenna aperture.

58. Using Huygens equivalent principle, calculate the relationship between any shade of electric strength and exciting out of ultra-wide TEM antennas aperture radiation field.

59. The essence of the fact that wideband signal can not be effectively transmitted using narrowband phased array in scenarios with large aperture and scan angle is given.

60. Due to the restriction of aperture effect and the aperture delay, it is difficult for a conventional phased array radar to get wide instantaneous band width under wide scan scope.