Fima
费马(已裂变原子数与初始的总装料金属原子数之比)
🗣️ 情景例句
Hello. This is a representative of Zhongyou Department Store.
喂，您好。我是中友百货的。
I learned history last month.
我上个月学历史。
I don't know whether you realize it, but this condition is essential to us.
我不知道你是否了解，但是，这个条件对我们是必要的。