事后计算 meaning in Chinese
ex post calculation
Examples
- Guiding photography using equatorial mount or synchronized motor enables the photographer to capture the same number of meteors as stationary photography does . the advantage of this kind of photography is that it helps the astronomer capture the meteor s motion across the star field . this can reduce a considerable amount of calculation work and minimize subsequent errors
利用赤道式脚架，或加上同步马达所进行的追踪摄影，所拍得的流星数目与固定摄影完全相同，没有什么得益，唯一好处可直接拍得流星在恒星间之轨迹，减少了大量事后计算工作，减少误差。