About NAGASU YOSHINORI
About 長野県工業技術総合センター
About NAKAYAMA NOBORU
About 信州大学, 工学部
About precision machining
About press working
About EDM
About pore
About sheet metal working
About nondestructive measurement
About acoustic resonator
About resonance frequency
About diameter
About cylindrical vessel
About signal generator
About signal analysis
About microphone
About loudspeaker
About Fourier transformation
About metal stamping
About acoustic signal analysis
About osculum
About pore formation
About sheet metal forming
About non-destructive evaluation
About Helmholtz resonator
About resonance frequency
About bore
About Helmholtz resonance
About small hole parts
About resonance frequency
About first fourier transform.
About Nondestructive testing
About Other cutting
About Special machining
About 共鳴
About 小穴
About 共鳴周波数
About 探索