sterad
/ˈsteræd/The meaning of STEAD is the office, place, or function ordinarily occupied or carried out by someone or something else.
noun [专属名词]球面（角）度，立体角度的单位
Average radiant intensity is simply the total radiated power divided by 4π sterad.
辐射的平均强度简单地说是总的辐射功率被4π立体角除.
单词造句: