Oxyferrite
铁氧体(氧与α-铁的固溶体)
🗣️ 情景例句
Does he have a middle name?
他有中间名字吗？
Is there a funny show on television tonight?
今晚有精彩的电视节目吗？
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。