求翻译：2. 贮矿槽结构：采用钢筋混凝土结构，矿槽周壁和底壁都用钢筋混凝土浇灌而成。为了保证贮矿槽内表面不被磨损，要在槽内加衬板，槽底板与水平面夹角50°～55°。是什么意思？

2 storage Trough structure: reinforced concrete structures, mine shafts, the peripheral wall and bottom wall, reinforced concrete has been poured from. In order to ensure the storage ore tank surface is not worn to increase in the slot liner, slot backplane and the horizontal angle of 50 ° to 55 °.

2.The mine slot structure: a reinforced concrete structure, mine slot Week wall and floor with reinforced concrete walls are poured out. In order to ensure that air mine slot inside surface will not be worn in the slot to the bottom of the tank, and backing plate and angle between horizontal plane 5

正在翻译，请等待...

2. the storage bin structure: reinforced concrete structure, bin walls and walls with reinforced concrete water at the end of the week. In order to ensure that surface in the storage bin is not being worn, plus liner in the slot, slot backplane with the horizontal angle of 50 ° ~55 °.

2. Bunker structure: Uses the reinforced concrete structure, ore trough Zhou Bi and the bottom panel all uses the reinforced concrete irrigation to become.In order to guarantee the bunker internal surface does not wear, must add the backing in the trough, the trough ledger wall and the horizontal pl