Coelinvar
柯艾里伐合金（一种恒弹性系数的镍、钴、铁、铬磁性材料）
🗣️ 情景例句
There aren't too many examples of this style of architecture left these days.
现在这种风格的建筑已所剩无几了。
She is supposed to be one of the best singers.
大家认为她是最有名气的歌星。
but where had it come from?
但它是从哪儿来的呢？