The pinion shaft runs in porous bronze bearing bushes.
小齿轮轴运行多孔青铜轴承衬套。
2
Yellow River sullage porous brick can substitute for clay brick and be used as bearing wall material based on analysis of masonry compression strength, crack development and breakage feature.
从砌体抗压强度、裂缝开展以及破坏特征等方面分析，黄河淤泥多孔砖可以替代黏土砖用作承重墙材。
3
Experiments on the bearing of gas porous concrete masonry envelope were accomplihed. Acording to the results, its working mechanism is studied and a formula for bearing capacities is suggested.