There have always been slight oscillations in world temperature.
全球气温一直在轻微地波动。
Here I have 256 oscillations per second.
这里是震动256，次每秒。
I got it low because I measured ten oscillations, you see?
我让它变低了，因为我做了10次振荡，看到了么？
Individual oscillations can be correlated in this way.
各个振荡能以这种方式进行对比。
So we can calculate now what the period of oscillations is.
因此现在可以计算，震荡的周期是多少。
So when it stops here, it has made three complete oscillations.
当它停在这里，就已经，完成了三个震荡。
For your pleasure and for my own pleasure, I will go three oscillations.
让你们开心，也让我高兴，我将做3个震荡。
But no electronic systems exist that can directly count these oscillations.
但是，目前没有哪个电子系统可以对如此高的振动频率计数。
I produce a certain frequency here, a certain number of oscillations per second.
这里制造一个频率，每秒震动，某个频率。
Because all of these oscillations come from the same source, the are synchronous.
所有这些振荡来源相同，所以是同步的。
Using an energy function method, a control strategy for damping of Angle oscillations is derived.
运用能量函数法，推导出一个可以抑制功角振荡的控制策略。
The large dimension, power system's structure and special working status will cause inter-area oscillations.
现代电力系统规模大，电网结构和特殊运行状况会导致系统内存在区域间振荡现象。
In large interconnected power system, there have been spontaneous system oscillations at very low frequencies.
在大型电力系统中存在有自生的甚低频系统振荡。
In large interconnected power system, there have been spontaneous system oscillations at very low frequencies.
在大型电力系统中存在有自生的甚低频系统振荡。
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