Experimental result shows: 1 on the condition of multi-point explosive, capacity of annular booster explosive is higher than that of cylinder by about 57%.
实验结果表明：1多点起爆条件下环形传爆药柱的起爆威力较圆柱形提高约57%。
2
The void fraction of annular two-phase flow inside cylinder is analyzed.
对圆管内环状两相流的空泡份额进行了分析。
3
The piston of the utility model adopts an annular structure; accordingly, a cylinder adopts annular structure too, both the piston and the cylinder are all arranged in the bicycle hub.