micro-holes 纳米级微孔
micro holes array 微孔列阵
surface micro-holes 表面微孔
multiple micro-holes 微细群孔
multiple micro holes 微小群孔
machining micro holes 微小孔加工
Micro Holes of Nozzle 喷油嘴微细喷孔
Expansion of micro holes 微孔洞扩张
Firstly, based on high frequency vibration cutting theories, a rotary ultrasonic vibration Longitudinal drilling device for micro holes has been developed , which is simple and transplantable in structure.
1) 基于高频振动切削原理，研制了一套结构简单、可移植的微小孔旋转超声轴向振动钻削装置。
参考来源 - 微小孔旋转超声轴向振动钻削技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
It is difficult to achieve the precision measurement of the position of the micro holes with traditional methods.
微小孔系的精密测量用传统的手段是难以实现的。
As the micro holes are in small size and in a plurality-quantity, the isopropyl acetone air cannot flow out and the atmosphere air can be protected.
由于微孔很小且很多，所以，异丙酮气体不会溢散出来，保护周围的空气；
The results also presented that there were so many shuttle-shaped micro holes in this steel wires, lugging along drawing axis and cored by the hard particles.
同时研究发现了钢丝在拉拔方向上形成的以第二相硬质颗粒为核心的梭形微孔洞。
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