A similar (though more rapid) diminution accompanies the reversing of the sun's magnetic field, which happens every 11 years or so.
太阳磁场的两极颠倒每隔大约11年出现一次，并且太阳磁场的效力也出现的类似的下降，尽管有些迅速。
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When the rear windshield is blocked, then you will lose the driving rear part of the field of vision on the road or reversing, greatly reduce the traffic safety, so the rear wiper is as important as.
Temperature field finite element during flat hot continuous rolling process with compact double stand reversing rolling mill was researched, which is the only one in China.