According to the relation between the temperature and the ratio of the diameter of the defrosting zone to that of the drilling bit, the volume of washing fluid is optimized.
依据不同冲洗液温度时融化区直径与钻头直径比和冲洗液用量的关系，讨论了冲洗液用量的优化。
2
On the basis of optimized vibratile drilling mono -material test, the optimized value variable parameter is selected for vibratile drilling test of two kinds laminated materials.
在单材料优化振动钻削实验的基础上，进行了两种叠层材料按优化值变参数的振动钻削实验。
3
On the basis of optimized vibratile drilling mono-material test, the optimized value variable parameter is selected for vibratile drilling tesl of two kinds laminated materials.