Pentapropyl
五丙基
🗣️ 情景例句
Great. What's happening with you these days?
非常好。你最近几天怎么样？
I'm sorry. I thought you wouldn't mind.
对不起，我还以为你不在乎呢。
below 20 per cent, its bactericidal action is negligible.
浓度低于20％时，杀菌能力基本上就不存在了。