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The article by " compressor " the magazine is achieved formerly, without allowing, must not reprint! The setting rapid development as industry and economy, people to the sources of energy ask for also grow day and day. Accompany the mankind's unending exploitation, the reserves of fossil fuel diminishs increasingly, world energy crisis grows day and day. Subsequently, of the sources of energy reasonable use, the repeated usage of the efficient benefit in order to of the sources of energy and the sources of energy, reclaim use the wide attention that got people. China is population big country, the sources of energy uses photograph contrast