So if now I hang on it a mass of one kilogram, I can calculate the period of one oscillation, and one over the period F is the frequency F, and I believe that is something like 38 hertz.
如果在上面,悬挂1公斤物质，我能够计算出,振荡的周期，1除以周期,等于频率，我相信,等于大概38赫兹。
So you can see now if the object comes to you, in other words, f if f prime is larger than f, if the frequency is higher, then the wavelength will be smaller.
所以你可以看到,如果物体靠近你，换句话说，如果f撇大于，如果频率变高，波长就会变短。
Let this be the transmitter f which produces frequency f, and here is the receiver which receives the frequency f prime.
这个是发射机,发射频率是，这是接收机,接收频率f撇。
The insulation class F or class H . The insulation of open-loop U/f condition of . structure has the adaptability to high carrie frequency voltage supplied by frequency converter .
电动机的绝缘等级为F级或H级，绝缘结构具有对变频器输出高载波频率电压的适应能力。
The insulation class F or class H . The insulation of open-loop U/f condition of . structure has the adaptability to high carrie frequency voltage supplied by frequency converter .
电动机的绝缘等级为F级或H级，绝缘结构具有对变频器输出高载波频率电压的适应能力。
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