Make sure outrigger were fully extended and installed on firm pad.

確保外伸支架全部伸出并穩(wěn)固于地面上.

互聯網

Mechanical model for the elastic thick outrigger of roof coal is set up.

建立了頂煤彈性深梁力學模型,分析了頂煤應力分布及頂煤破壞形式.

互聯網