| 1. | Mine support ; roof bars single props ; lengths
矿井支护.顶梁单体支柱.长度 |
| 2. | Mine support ; head for single props ; connecting dimensions
矿井支护.单支柱用顶板.连接尺寸 |
| 3. | Mine support ; roof bars for single props ; testing , requirements
矿井支承.单立柱屋顶梁.试验和要求 |
| 4. | Blasting top coal caving technology with steel single props in quot; three - soft quot; seam
型钢单体支柱炮采放顶煤开采技术 |
| 5. | Oil cylinder material capability analysis and its cost forecast of hydraulic single prop used in mines
矿用单体液压支柱油缸材料性能分析及成本测算 |
| 6. | Mine strata pressure behavior law and surrounding rock control of the top coal caving mining face with hydraulic single props
单体支柱放顶煤工作面矿压显现规律及围岩控制 |
| 7. | I found that my trousers was sweat pickled after one week wearing . it ' s not a comfortable job to fly single prop airplane on such hot days in july
穿了一个星期的制服裤子，突然有一天发现汗渍已经留下了很明显的痕迹。在七月流火的日子里，出了多少汗已经记不得了，飞没有空调的单发螺旋桨飞机不是件容易的事情哦！ |
