通过对斜碰撞过程中原煤(混矸)球的运动分析,推导出基于碰撞恢复系数的物料块反弹距离公式。
A formula of rebound distance based on coefficient of restitution was deduced through kinematic analysis of raw coal (mixed gangue) in the process of oblique-impact.
以恢复耕地土中原有的化学组成环境的自然状态,使农作物正常生长,提高产量。
The preparation method can recover the natural state of the original chemical composition environment in the farmland, lead the crops to grow normally and improve the yield.
以恢复耕地土中原有的化学组成环境的自然状态,使农作物正常生长,提高产量。
The preparation method can recover the natural state of the original chemical composition environment in the farmland, lead the crops to grow normally and improve the yield.
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