现在，在波尔兹曼方程方程里，我们要追踪中子，所以我们需要，能将流量拿出并除以速率。
Now in the Boltzmann Equation we wanna track neutrons so we need to take the flux and divide it by the velocity.
我们需要知道中子的速率，我们能够用能量来谈论它，我们需要知道时间，它什么时候会发生？
We need to know the velocity of the neutron which we can talk about with energy and we need to know the time, when did this take place?
如果那是大于1，也就是说我们创造了，更多的中子，在一代里，相对于下一个，中子数增长，裂变速率也一样。
If it's greater than one, namely we produce more neutrons in one generation compared to the next the neutron population grows as does the fission rate.
我们已经使用了一个相对简单的词语，称为，中子的增殖系数，那就是K，如果K等于1，中子数，是稳定的，裂变速率也一样。
And we've used a relatively simplistic term called neutron Multiplication Factor which is the K that if the K equals one the neutron population is steady as is the fission rate.
中子星的速率,得到轨道的半径，得到周期的大小，如之前讨论过的那样，现在取一个光学的。
That means you can get the speed of the neutron star, you can get the radius of the orbit, and you can get the period, just like we discussed before.
可以称为，这是从供体星-,向中子星的，转换速率,这个转移速率大概是-,10的14次方公斤每秒,这个转移速率很可怕。
dm/dt The mass transfer rate, - which I call dm/dt-- so that is the transfer rate from the donor - onto the neutron star-- that transfer rate is roughly ten to the 14th kilograms per second.
可以称为，这是从供体星-,向中子星的，转换速率,这个转移速率大概是-,10的14次方公斤每秒,这个转移速率很可怕。
dm/dt The mass transfer rate, - which I call dm/dt-- so that is the transfer rate from the donor - onto the neutron star-- that transfer rate is roughly ten to the 14th kilograms per second.
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