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lswjjzp: 挖掘机在经过轨迹、软土、粘土路面时,应铺垫板,在高的工作面上挖掘散粒土壤时,应将工作面内的较大石块和别的杂物铲除,避免塌下形成事端。(来自:挖掘机出租公司 http://www.lswjjzp.com)
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