Achromycin
n. [药]四环素(商品名)
🔁 扩展释义
【化】 四环素; 嘌呤霉素
🗣️ 情景例句
I have to remember to put them in the bag
我必须记得将它们放进袋子里
I think it's going to be too high.
我认为它将太高。
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。