Ethylizer
加铅计量泵
🔁 扩展释义
【化】 乙基化器(将气缸加四乙铅溶液的装置)
🗣️ 情景例句
Is it too late to cancel our plans?
现在取消我们的计划是否太迟了？
She began playing the violin when she was nine.
她从九岁就开始练习小提琴。
The first thing I saw when I entered the art gallery was a notice which said:
走进展厅首先看到的是一张告示，上面写着