Columbic compound
[建] 五价铌化合物
🧩 词语组成解析
[建] 铌的, 含铌的
🗣️ 情景例句
Grandpa, get the net, please!
爷爷 ，请把网子拿来！
Take care of yourself and don't forget to keep in touch.
多多保重。别忘了保持联系。
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，