制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子,其中一些中子再次有效地产生裂变。
"The only thing stronger than the desire to live is the desire to love."
The best investment you can make is in yourself.
中心地的规模和分布并非偶然,而是遵循一定的规律。
The most important thing in mathematics is to ask the right questions.
We first make our habits, and then our habits make us.