Nead
abbr. negative electron affinity device 负电子亲和力器件
🗣️ 情景例句
Here I am.
我在这儿！
When did you find this book?
你什么时候找到这本书的？
In 1953, a former electronics engineer in his fifties, Christopher Cockerell,who had turned to boat-building on the Norfolk Broads,
在1953年，有一位50多岁名叫克里斯托弗·科克雷尔的原电子工程师，改行在诺福克郡的湖泊地区从事造船业，