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從一顆螺母看中國(guó)與日本技術(shù)差距如此之大 |
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點(diǎn)評(píng)
呵呵!確實(shí)很簡(jiǎn)單,人家在官網(wǎng)上都告訴你原理了!國(guó)人呀,又犯紙上談兵的毛病了!
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