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2011-4-13 09:57:32
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点评![]()
泪水的季节
2011-4-13 16:37
我一朋友自主产权发明了新的太阳能取暖和制冷双用系统,成本极低,实用效果还不错,国内无人问津,后来专利卖给法国人了。
2011-4-13 11:58:31
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2011-4-13 12:17:37
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2011-4-13 12:19:38
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2011-4-13 12:48:41
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2011-4-13 13:04:53
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2011-4-13 13:13:36
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