Vibration performance
[化] 振动特性
🧩 词语组成解析
🗣️ 情景例句
We might need you to come through with your friends, Robbie.
我们也许需要你们多邀朋友来帮忙， Robbie。
The farmer is hoeing the fields.
农民在耕地。
This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.
这种通讯联系要靠21厘米波段，即每秒1420兆周的精确无线电频率。