dwarf plankton,nan(n)oplankton

X-ray Diagnosis of Microsmall Breast Cancer (A Rewport of 42 cases);

微小乳腺癌的X线诊断(附42例报告)

Degradation of growing Microcystis aeruginosa and Planktothrix mougeotii by several predacious microanimals;

几种捕食性微小动物对铜绿微囊藻及孟氏浮游蓝丝藻生长的抑制作用

Analysis on Electric Field of Workpiece Surface through Finite Element Method in Machining Micro-hole by ECM;

有限元法分析微小孔电解过程工件表面电场分布

The domestic and foreign status of the research and development on vibration drilling micro-hole is summarized, and the applying prospect and the existing problems are also analyzed.

介绍了振动钻削技术的加工原理,综述了振动钻削加工微小孔的国内外研究现状,分析了振动钻削技术的应用前景及存在的问题。

A kind of on-line monitoring method is put forward for micro-drill breakage.

本文提出了一种基于小波分析的微小钻头折断的在线监测方法,得出微小钻头折断时的力信号呈现大幅度增长的趋势,并利用小波分解代替传统的傅立叶变换进行信号分析,来准确识别钻头的正常钻削与破损状态,从而获取钻头折断的预报,实验结果证明了该方法的有效性。