Fùlìyèbiànhuàn
ㄈㄨˋ ㄌㄧˋ ㄧㄝˋ ㄅㄧㄢˋ ㄏㄨㄢˋ
Simplified 傅立叶变换
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 傅立葉變換 and it comes back until you know it.