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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    電磁鐵方向判斷

    2013/12/23 8:20:22      點(diǎn)擊:

    電磁鐵

    電磁鐵的磁場方向可以用安培定則來判斷。
    安培定則是表示電流和電流激發(fā)磁場的磁感線方向間關(guān)系的定則,也叫右手螺旋定則。
    (1)通電直導(dǎo)線中的安培定則(安培定則一):用右手握住通電直導(dǎo)線,讓大拇指指向電流方向,四指指向通電直導(dǎo)線周圍磁力線方向。
    (2)通電螺線管中的安培定則(安培定則二):用右手握住通電螺線管,使四指彎曲與電流方向一致,那么大拇指所指的那一端是通電螺線管的N極。[1]

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