Arca measurement of catalyst
[机] 催化剂表面积测定
🧩 词语组成解析
n. 槟榔树或其果实
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
He's going up the ladder pretty quickly.
他真是平步青云。
What's your plan for the summer holiday?
暑假计划干什么？
A man was lying in the box on top of a pile of woolen goods.
箱内有一个人正躺在一堆毛织品之上。