The bi-folding doors deliver natural light and harness passive cooling breezes when open and security when closed.
双折门提供自然光，打开时利用被动降温的微风，关闭时保障安全。
Wall cutting and unloading is a task of top priority of comprehensive harness in the north slope of Jinduicheng open pit stope. The vibration by blasting influenced the stability of slope.
削坡减载是露天采场北部边帮综合治理的当务之急，在边坡上进行爆破作业产生震动，对边坡稳定有一定影响。
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