zhuǎndòngguànliàng
ㄓㄨㄢˇ ㄉㄨㄥˋ ㄍㄨㄢˋ ㄌㄧㄤˋ
Simplified 转动惯量
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 轉動慣量 and it comes back until you know it.