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大雪封门,你以为人们就没办法出行了吗?雪地交通工具就是利用和克服积雪的这一特点而发展起来的。雪橇(也称爬犁)雪橇是由某动力牵引,可在雪地上载重物而行的一种交通工具。其结构大致是在承载重物的平板下面,沿长度方向的两边加有使平板高出地面的长木方。有时在长木方中间下装有沿长木方相同方向的铁条或铁丝,它一是为保护这个长木方不致磨损太快;二是可使雪橇在雪地上滑行时阻力更小。
When the snow seals the door, do you think that people can’t travel? Snow transportation is developed and developed using this characteristic of snow cover. A sled (also known as a sledge) sled is a type of vehicle that is towed by a certain power and can carry heavy objects in the snow. Its structure is roughly underneath the plate carrying the weights, and long sides are added on both sides along the length direction to make the plate rise above the ground. Sometimes in the middle of the long wood side, there are iron or iron wires in the same direction along the long side of the wood. The first is to protect the long wood from wearing too fast; the other is to make the skis less resistant to sliding on the snow.