| 摘要 |
The present invention of a magnetic source and condenser is applied directly outside on a pipe. The magnetic device comprises a series of iron pieces having curved contact surfaces on the same side, a magnet is placed between every two piece of iron, the magnets with faces closed to one another have the same pole, thus strong magnetic force is generated by the repelling of the same pole of the two magnets, the series of iron pieces and the magnets are surrounded a frame on their sides to fix and protect the magnets from outside factors.
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