Olshevsky tube
[医] 奥耳舍夫斯基氏管(一种X线管)
🧩 词语组成解析
🗣️ 情景例句
I'm tired of working all day.
我厌倦整天工作。
Did you cut yourself?
你自己剪的？
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。