一种液压双侧自卸四轮挂车属农牧机械技术领域，它用机车原有的液压系 统。
The utility model relates to a hydraulic double-side self-tipping four-wheel trailer which belongs to the technical field of agricultural machinery and uses the original hydraulic system of a tractor.
本文选择双轴挂车为具体研究对象。
A two-shaft trailer is chosen as a specifical object of study.
本文选择双轴挂车为具体研究对象。
A two-shaft trailer is chosen as a specifical object of study.
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