Planets in their orbits are swept along by the sweeping arms of the Sun, as we have explained, but when doing so encounter matter in their way - subatomic particles they must plow through.
我们已经解释过了，在自己轨道的各个行星是被太阳“巨大的臂膀”扫过，但此时在途中遇到的问题——必须通过亚原子粒子。
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。
The technics of adding face for plow face is introduced. The better solution way to reasonable mining coal resource is provided. The particularity of equipments for thin coal seam is expounded.
对刨煤机工作面加面工艺进行了系统介绍，对合理的煤炭资源开采提供了更好的解决办法，并针对薄煤层开采设备特殊性作了细致的阐述。
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。
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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