tuǒyuánhánshù
ㄊㄨㄛˇ ㄩㄢˊ ㄏㄢˊ ㄕㄨˋ
Simplified 椭圆函数
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 橢圓函數 and it comes back until you know it.