If a = b and b = c it follows that a = c.
设a =b，b =c，则a = c。
For example the regular expression a (b (C)) has the subgroups (b (C)) and (C).
例如，正则表达式a (B (C))包含子组(B (C))和(C)。
We know there are A people and O people and B people. Now there may be Gut Type A, B and C people.
因为大肠杆菌可能产生像血型一样的类型，我们知道血型有A型，B型和O型，现在可能肠道杆菌也有A，B，和C型。
我们有A和。
B the question really is find the "Best" a and b.
我们要求的是找到最好的一组a和。
B and so now we can solve this for a and b.
现在我们可以解出a和。
And we could have a slow rate into c, that's fine. We could have, again, B a very slow rate into B.
我们可以有一个变成C的缓慢的速率，那是可以的，我们可以有，同样的，很慢地速率生成。
B And as soon as we make B, we want it to go away.
一旦我们生成，我们想要它很快消失。
这里的最后一个是。
B And if you want to know B, it's just the same thing.
如果你想知道，它是一样的情况。
Therefore, b" is equal to 1 and b=5(25b")=125=$1.25.
因此，b''等于1，则b=5(25b")=125=$1.25.
Open needle valve "b" to bleed air and then close "b" and vent needle valve.
开启针形阀“B”排放空气，然后关闭“B”和排气针形阀。
Open needle valve "b" to bleed air and then close "b" and vent needle valve.
开启针形阀“B”排放空气，然后关闭“B”和排气针形阀。
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