Phosphonic acid
[化] 膦酸
🧩 词语组成解析
a. 膦的, 膦酸的
🗣️ 情景例句
I am in the 7th grade.
我是七年级。
Have you found a job yet?
你找到工作了吗？
Every year, several classes visit the factory.
每年都有好几个班去参观这家工厂。