Quadrupler
[计] 四倍器, 乘装置
🗣️ 情景例句
I'm glad I got to know you.
我很高兴能够认识你。
It's my bottle now.
这个瓶子现在属于我了。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。