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上传时间: 2014-03-14
详细说明： The surface quality of mechanical parts not only directly affect the performance of the parts, but also for the quality, reliability and service life is also crucial. With the rapid development of ultra-precision machining technology, the microscopic surface topography measurement of ultra-precision machining of ultra-precision machining has become a key issue in the field to be solved. Ultra-precision machining surface is very smooth, the surface roughness value Ra is between a fraction of a nanometer to tens of nanometers. The materials to produce the Ultra-smooth surface are mainly copper, aluminum ,semiconductor materials ,like germanium, silicon ,and the optical materials like optical glass, plexiglass, quartz glass etc,which are very easily to be damaged ,deformed or scratched. ...展开收缩
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