Said a different way, in the case of the straight-line programs, how long would it take to run a program?
换种说法,在直线式程序里面,运行一个程序要多长时间?
Here is the pitch in--of--a string an octave higher so you can see it this way. As you probably know, if you take a long string and pluck it, it's going to take that long string a long time to pass that sort of cycle, if you will, just one pass through that cycle.
这也是个音高,一个高八度的音弦,你可以这样这样看 你们可能知道,如果你拨动长弦,长弦要经过很长时间,才能完成一个震动周期,如果你想,可以尝试下
The period, that's right. So, it's going to take one period to move that long. And another way 1 we can say period is just 1 over nu or 1 over the frequency So, now we know both the distance traveled and the time the elapsed.
还是?周期,对的,它需要一个周期的时间,另一种说法是周期是,除以nu,也就是1除以频率,现在我们同时知道了。
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