孔长径比 meaning in English

boring ratio

Ratio of nozzle hole length nozzle diameter
喷孔长径比
The ratio of the length and the radius of bolt boles is 6 1 in 2v 6 / 8 air compressor and the holes belong to little and deep ones , there are many problems , such as the guiding , chip explusion and cooling , during the manufacturing
某厂生产的2v 6 / 8型空压机连杆螺栓孔长径比为6 1 ，属小深孔，加工时存在着导向、排屑、冷却及润滑等问题。
Simulation results show that better atomization can be realized by enhancing the cavitation intensity via increasing the injection pressure difference or decreasing the nozzle inlet round angle - radius ratio
通过模拟计算可知，提高喷射压差和减小喷孔入口圆角半径都可以提高空穴强度，同时也发现提高喷孔长径比可以使空穴在喷孔出口截面上分布更为均匀。
Based on this model , the effects of geometric and structural parameters , such as injection pressure , rear pressure , length - diameter ratio , inlet round angle - radius ratio and non - axis symmetry of nozzle , on the distribution of the cavitation inside the nozzle are analyzed
基于这一模型进一步分析了喷射压力、背压和喷孔长径比、喷孔入口圆角比、非轴对称喷孔等几何结构参数对喷孔内空穴分布的影响。