關於「Delta symbol」標籤，搜尋引擎有相關的訊息討論：

The Delta Symbol: What Is Its Meaning In Maths? - Private Tutoringksa.mytutorsource.com › Home › MATHSUnicode character "GREEK CAPITAL LETTER DELTA" is rendered ...stackoverflow.com › questions › unicode-character-greek-...How To Insert Delta Symbol In Excel - YouTubewww.youtub