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南方林区,地形条件复杂,一般山高、坡陡,木材集运机械化始终是一个大问题,过去,由于受修正主义路线的破坏和干扰,木材集运多靠人拉、
In the southern part of the country, topographic conditions are complex, with generally high mountains and steep slopes. The mechanization of timber transportation has always been a big issue. In the past, due to the destruction and interference of revisionist routes,