Next, the signal is sent to the frequency and phase comparator which wants the two signals to  be identical.

来，信号被发送到频率和相位比较器，该比较器希望两信号相同。

Because these seeds are so little, you may need to buy a special bird feeder with smaller openings to hold it.

因为因为这些种很小，所以你需要购买种特殊的喂食器，这种喂食器开口比较小，可以稳住种。

In the middle is a frequency and phase comparator that outputs a signal equal to the difference  between the crystal and the voltage-controlled oscillator.

中间频率和相位比较器，它输出等于晶体和压控振荡器之间的差值的信号。

Next, an integrator takes  the output from the phase comparator and turns it into a steady voltage and uses it to  drive the voltage-controlled ring oscillator.

来，积分器获取相位比较器的输出并将其转换为稳定电压，并使用它来驱动压控环形振荡器。