Dielectric constant of vacuum
[化] 真空介电常量
🧩 词语组成解析
n. 电介质, 绝缘体\\na. 非传导性的
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 is in conference right now.
他现在在开会。
I remember the girl whose father owns a stationery store.
我记得那个女孩的父亲有一家礼品店。
I don't want to know what it's been; I want to know what it is now.
我不想知道它曾经是什么；我想知道它现在是什么。