从料堆的形状、堆积方式，堆积高度及四周环境等方面，分析了料堆塌方原因和过程。
And the reasons and courses of landslip were analyzed through the pile shape, pile height, and surrounding condition.
堆积机可提升卸载高度，可以让操作员从重复性的弯腰动作中解脱出来。
AS-200 stackers feature elevated discharge, which frees operators from repetitive stooping and bending.
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