Catalyst-packed column
[建] 催化剂填充塔
🧩 词语组成解析
packed
[pækt]
adj. 充满…的;塞满了…的;
v. 包装(pack的过去式和过去分词);
column
['kɑləm]
n. 纵队，列;圆柱;专栏;
🗣️ 情景例句
I'd like to make an appointment to discuss a question.
我想约个时间讨论个问题。
He hasn't done any worthwhile work in five years.
这五年来他没做过一件正经事。
Yes, I think so.
是的，我想会有空。