Acetone number
[化] 酮值
🧩 词语组成解析
n. 丙酮\\n[化] 丙酮
🗣️ 情景例句
Yes. About four years ago.
是的 ，大约四年前走的。
The negotiations on the rights and obligations of the parties under contract turned out to be very successful.
就合同保方的权利和义务方面的谈判非常成功。
On Reading
论阅读