K-shell
[医] K层, K壳(治原子构造)
🧩 词语组成解析
shell
[ʃel]
n. （贝、卵、坚果等的）壳;外壳;炮弹;（人的）表面性格;
vt. 去壳，脱落;炮击;
vi. 剥皮;炮轰;
🗣️ 情景例句
All right.
很正确。
Do you have a letter of introduction?
你有介绍信吗？
I'd like to know some information about the current investment environment in your country?
我想了解一下贵国的投资环境。