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目前小四轮拖拉机液压系统普遍存在着由于液压油箱的容积较小压力较低，至使在提升较重农机具时发生抖动或提升缓慢的现象，降低了小四轮拖拉机的工作效率，减少了小四轮拖拉机的使用寿命。为此我们对小四轮拖拉机的液压系统进行了改装，利用增加小四轮拖拉机的液压油箱的容积
The current small four-wheel tractor hydraulic system is widespread due to the smaller hydraulic tank pressure is low, so that in the lifting of heavier agricultural machinery jitter or slow increase phenomenon, reducing the work efficiency of small four-wheel tractors and reduce the Small four-wheel tractor life. To this end we have a small four-wheel tractor hydraulic system was modified, the use of small four-wheel tractor to increase the hydraulic tank volume