Spectrodensitometry
分光密度测定法, 光谱密度法
🗣️ 情景例句
I hope it isn't important.
希望不是什么重要事。
If you want knowledge,you must toil for it.
若要求知识，须从勤苦得。
It's time to get down to business now.
是进入正题的时候啦。