Sigma orbital
[化] σ轨道
🧩 词语组成解析
[计] 求和\\n[医] σ(希腊文第十八个字母)
orbital
['ɔ:bitl]
adj. 轨道的;眼窝的;
🗣️ 情景例句
Take care, and don't be a stranger.
保重，以后别见外。
Necessity knows no law.
铤而走险。
The old farmhouse the family lived in was to be replaced by new $500,000 home.
这家人住的旧家舍将由一座价值50万美元的新住宅所取代。