Possible affective RE of observationtarget (independent variable) accounted for 280 items.
可能影响RE的观察指标(自变量)共280个。
2
NASA's Mars Exploration Rover Opportunity took this image in preparation for the first autonomous selection of an observationtarget by a spacecraft on Mars.
NASA的火星勘探机器人机遇号拍了这张照片，为火星探测器首个自主选择观测目标作准备。
3
Besides, the bubble density and reflectance increased with the wake observation position approaching the target ship.