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KOBELCO

液壓挖掘機的節能使用方法 4

此內容，請在Adobe® Flash® Player有效的環境下閱覽。

根據土質的軟硬，改變挖掘角度

進行慎重的操作時，降低發動機轉數

避免不必要的發動機高轉數

各种姿势玩小处雏女视频