• 我国北方农村建筑用材,多等速生树种为主,这些木材发生腐朽与虫蛀

    Most structural timber species now used in the North China's rural areas are poplar, willow, elm etc, which are fast growing trees but whose woods are very susceptible to biological deterioration.

    youdao

  • 我国北方农村建筑用材,多等速生树种为主,这些木材发生腐朽与虫蛀

    Most structural timber species now used in the North China's rural areas are poplar, willow, elm etc, which are fast growing trees but whose woods are very susceptible to biological deterioration.

    youdao

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