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- lost of time today, there are many social websites can be lost your time, like Facebook, it's known website, evey one has more account, When you always use Facebook, you will be addicted. Of course, it's a big problem because you lost many hours every day ( i talk when using Facebook for nothing just for losing time). So ,it must to control our time ,October 26, 201910
- voltage stability (electrical engineering subject) The stressed power system, due to the increased loading or severe contingencies and voltage instability leads to situation the system no longer remains in the secure operating region, the voltage stability is very important the security of power system, there are several methods to improve the voltage stability in the power system as Static var compensator.October 30, 201720

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