planetary hours

常见例句

This color image was assembled from a series of exposures taken within 36 hours of the Mars closest approach with Hubble's Wide Field and Planetary Camera 2.
这一彩色图像是通过哈勃太空望远镜和行星照相机2在36小时内采集的最接近火星的一系列图片中组合出来的。
This natural-color Hubble image, which combines data obtained in 2006, 2007, and 2009 from the Wide Field Planetary Camera 2 and the Advanced Camera for Surveys, required 28 hours of exposure time.
这是一幅自然色彩的哈勃图像，合成它的数据来自于宽视野行星照相机和Surveys的高级照相机分别在2006年，2007年和2009年所取得的数据。每次拍摄的曝光时间需要28小时。