Angular (planar) node

角节面

Explanation (EN)

A node related to the orbital's shape; the number equals the angular momentum quantum number l.

Explanation (ZH)

与轨道形状相关的节面;其数目等于角动量量子数 l。

About the IPA

The International Phonetic Alphabet is a standardized system of symbols used to represent the sounds of spoken language.

It helps linguists, language learners, and educators accurately describe pronunciation across languages.

Example: the word "hello" in British English is transcribed as /həˈləʊ/ in IPA.