防止电力系统频率崩溃是防止系统大面积停电的一项重要措施。
Perventing frequency collapse is an important prevention measure of widespread blackout.
系统频率崩溃往往是由于系统频率降低到超出发电机组承受能力，形成连锁反应所致。
Frequency collapse is often caused by the cascade reactions due to the system frequency declined beyond the withstanding capability of turbo sets.
但是，频率崩溃的危险是始终存在的，并对电力系统的安全稳定运行造成了很大的影响。
However, the danger of frequency collapse always exists, and has a great impact for power system running.
低频减负荷（UFLS）作为电力系统的第三道防线，是一种防止系统频率崩溃的有效手段。
Underfrequency Load Shedding (UFLS), which is the third defensive line of power system, is one of effective methods to mitigate the frequency collapses.
当故障导致供电系统与外电网断开后，此时供电系统因有功不平衡，将出现频率崩溃现象，导致大面积停电事故。
When disconnected with external power grid due to certain fault, it will result in frequency collapse, and even leads to large-scale blackout owing to the active power imbalance.
麻省理工学院的研究表明股市崩溃的频率服从反向三次幂法则。
Research at the Massachusetts Institute of Technology shows evidence that the frequency of stock market crashes follow an inverse cubic power law.
如果能够加速它变异的频率，就能迫使这种戏剧性的基因变化让病毒完全崩溃。
You speed up the mutation rate, forcing such dramatic genetic change that the virus crashes completely.
在突然恶性事故情况下，由于发电厂的退出，电力系统有可能产生严重的频率下降，导致系统崩溃和大面积停电事故。
The disconnection from power network of power plants under emergency conditions may cause serious frequency drop and then large area outage, even power network collapse.
在突然恶性事故情况下，电力系统产生严重的频率下降，导致系统崩溃和大面积停电。
Under malignant emergency conditions, the frequency of power system seriously and consequently drops down which lead, system to collapse and a large area outage.
可靠性，或产品崩溃的频率，或损坏客户数据，都是很重要的，但不总是这样。
Reliability, or how often the product crashes or trashes his data, may be import ant , but not always.
可靠性，或产品崩溃的频率，或损坏客户数据，都是很重要的，但不总是这样。
Reliability, or how often the product crashes or trashes his data, may be import ant , but not always.
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