Ion density
[医] 离子密度
🧩 词语组成解析
ion
['aiən]
n. <物>离子;
🗣️ 情景例句
There are three things that have to be done first, Harry.
首先我们必须做三件事， Harry。
It wasn't very expensive either.
而且也不太贵。
She can't come. She has to help her Mommy!
她不能来。她得帮她妈妈的忙！