xuánzhuǎnjiǎosùdù
ㄒㄩㄢˊ ㄓㄨㄢˇ ㄐㄧㄠˇ ㄙㄨˋ ㄉㄨˋ
Simplified 旋转角速度
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 旋轉角速度 and it comes back until you know it.