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e·phem·er·is 英ɪˈfemərɪs美ɪˈfɛmərɪsAHDĭ-fĕmʹər-ĭs 高COCA⁹⁸⁷⁴⁶BNC⁹¹⁵¹⁷⁺⁸iWeb⁴⁴⁰³¹
基本英英搭配记法Thesaurus例句
n.天文天体位置表;星历表¹⁰⁰复数ephemerides名词复数ephemerides
Noun:
an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year;today computers calculate the ephemerides astronomical ephemeris星历表ephemeris day历书日ephemeris time星历表时间,历书时…ephemeris data天文历数据
ep-hemeris后缀=-ise⇒n.天文天体位置表;星历表as in.almanac
同义词 calendar,journal,yearbookannual,chronicle,record,register,registry
almanacnoun document containing information for a year
annual,calendar,chronicle,journal,record,register,registry,yearbook When their orbit eccentricity or inclination are near zero, some problems may occur when the GPS Kepler orbit elements fitting method is applied to fit their broadcast ephemeris parameters.
导航卫星一般采用近圆轨道，当卫星轨道偏心率或者轨道倾角接近于零时，利用 GPS卫星开普勒轨道根数拟合卫星广播星历会出现一些问题。 dictall
Based on the GPS broadcast ephemeris parameters, the nonlinear least square fit algorithm of broadcast ephemeris parameters was developed, and the relevant calculation formulas were derived.
基于 GPS广播星历参数，研究了导航卫星广播星历参数的非线性最小二乘拟合算法，并推导了相应的计算公式。 dictall
Furthermore, the computer simulation technique is applied to study initially the distortion law of CCD satellite images caused by errors of ephemeris parameters and initial attitude angle.
利用计算机仿真技术初步研究了星历参数和初始姿态角误差引起的 CCD卫星影像畸变的规律。 cnki |