點分Atom , molecles?
noble gas 係atom or ,molecles?
atom and molecles 個樣點嫁?例如一粒過 定 兩粒痴埋?
收錄日期: 2021-04-19 16:42:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071110000051KK03561