Mike Krzyzewski is really a famous coach of Dream Team. She has coached north america men's basketball team for some time, that's clinched numerous medals for his country. Following Londonfl jerseys supplyn Olympic was over, Krzyzewski told The Associated Press that this game will be his final one as national coach, a job he's held for seven years. He had left open the possibility of swomen nfl jerseystaying with the team beyond the London Games, when practice on Saturday said these will be his last Olympics.When asked if he was sure, Krzyzewski didn't hesitate before again saying, "yecheap nfl jerseys wholesales," this will be his last game "If we could win it, then it might be three major championships in a row, i always do not know when that has been done because we haven't usually won http://govoriotkrito.bg/libs/nflcn08.htmthe globe championships," Krzyzewski said. "It becomes an enormous thing for the program." Whatever, he's an awesome coach. His achievement are going to be remembered by the country.cheap nfl jerseys
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松川电器-什么是电流继电器、电磁继电器?

2013/12/2 9:38:35点击:
什么是电流继电器、电磁继电器?
    答:电流继电器是用来控制线路流过的电流的。在机床控制中常用的电流继电器有两种:
    (1)过电流继电器:这种继电器在通过线圈的电流大于视定值时动作,将电路切断。可用于电动机及变压器的过载及短路保护。
    (2)欠电流继电器:当通过线圈的电流小于规定值时,继电器动作;将电切断。电流继电器除了作保护用外,还可以作自动控制用。例如用作电机的负载信号装置,当电机的负载电流达到预先调整好的数值时.电流解电器处出信号,使相关电路的电器动作,以达到自动变换程序的目的。