After contrast and analyse,it was found that wall-hung spiral chute is ascendant and oecumenical than wall-laid spiral chute.
通过对比得出了壁挂式相对嵌入式螺
的优越性及技术经济效果。
After contrast and analyse,it was found that wall-hung spiral chute is ascendant and oecumenical than wall-laid spiral chute.
通过对比得出了壁挂式相对嵌入式螺的优越性及技术经济效果。
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