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????????????12??????????????????2???????????????????? (?????????? ??????????????)2???????,????“??”??????????(TBM)?????4?????????8????????????????,???TBM??????????????,?????TBM?????

12??2???????????????????????,??TBM“??”????

?????,“?????????”TBM?????,????????????,?12.23?,??160?,???????????2800????????????????????????????????????????,??????????????????????????????,?????????????,?,????????20%?????????????????40%?

?????????????12?2?,?????3.3?????,????14.9?,10?TBM?????????????4???????????????????,?????2??????

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