wheel plow 有轮犁
three-wheel plow 三轮犁
one-wheel plow 单轮犁
one wheel plow 单轮犁
two-wheel frame plow 双轮架式犁
The age was marked by increased specialization and the invention of the wheel and the ox-drawn plow.
青铜时代还出现越来越多的分工，并且发明了车轮及牛拉的耕犁。
This paper introduces the structure and working principle of the crank rocker transposition mechanism of depth wheel on two way alternative plow and the process of optimizing its parameters.
介绍了全翻转式双向犁的曲柄摇块式限深轮换位机构的结构、工作原理及参数优化设计过程。
1LF hydraulic reversible plow is mounted with four-wheel tractor; it is used for the loam, sand loam , cultivated and dry land , it can finish the furrowing work in double way.
1LF系列翻转犁是同四轮拖拉机配套的全悬挂式液压翻转犁，适用砂土壤和旱田熟地耕翻作业，可进行梭式双向作业，耕后地表面平整，具有地头空转行程少，作业效率高等特点。
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