right anterior oblique (RAO)是什么意思

用法例句

Study on Introducing and Cultivating Experiment of Poplar in Chayouqian Banner;

察右前旗杨树引种栽培试验研究

This paper reports the application of TM 1:50000 image to investigation of farmland Variation in Keyouqian Banner.

介绍了ＴＭ１：５万卫片在内蒙古科右前旗耕地变更调查中的应用、分析了耕地变更情况及变更趋势。