通过对其自动上下料的研究从而到达掌握相关的知识，对上下料系统有更清楚的认识。
Automatic up and down through their study materials in order to acquire the relevant knowledge to reach the upper and lower feeding system to have a better understanding.
通过对其自动上下料的研究从而到达掌握相关的知识，对上下料系统有更清楚的认识。
Automatic up and down through their study materials in order to acquire the relevant knowledge to reach the upper and lower feeding system to have a better understanding.
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