About NAKANO Akihiro
About National Inst. of Advanced Industrial Sci. and Technol. (AIST), Ibaraki, JPN
About NISHIZU Takahisa
About Gifu Univ., Gifu, JPN
About Cryogenics
About surveying tool
About liquid hydrogen
About acoustic resonator
About impedance
About volume measurement
About bubble level
About Electric Impedance
About level gauge
About Helmholtz resonator
About electric impedance
About Measuring methods and instruments of length,area,cross section,volume,angle
About 液体水素
About 水平器
About 実験的研究