The optical system of LAMOST consists of a reflecting Schmidt correcting plate M A and a spherical primary mirror M B . Both M A and M B are segmented mirrors. Each segment is a hexagonal sub mirror with a 1.1 m diagonal.是什么意思_The optical system of LAMOST consists of a reflecting Schmidt correcting plate M A and a spherical primary mirror M B . Both M A and M B are segmented mirrors. Each segment is a hexagonal sub mirror with a 1.1 m diagonal.在线翻译_英语_读音_用法_例句