| 释义 |
视差shìchā
1.直接用肉眼观测时产生的误差。{visual error; apparent change in the direction or position of an object when viewed from different positions with naked eyes}
2.由地球表面上某一点到某天体的中心和由地心或太阳到同一天体的中心的夹角,叫做该天体的视差。由地心算起的是周日视差,由太阳算起的是周年视差。{parallax. The angle between the two lines converging on the center of a celestial body, one from a given point (i.e. an observer's position) on the surface of the earth and the other from the centre of either the earth or the sun, is known as the parallax of that celestial body. The angle containing the line from the center of the earth is the diurnal (or geocentric) parallax, and the angle containing the line from the center of the sun is the annual (or heliocentric) parallax.} |