Vibration density meter comprising nodal circle supported resonant disk
作者： Thomas C Piper
DOI:
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摘要: A disk supported only at the nodal circle of its simplest mode vibration is driven a resonant frequency by magnetic force. The may be placed in fluid and density can determined measuring disk.
lens.org 参考文章(3)
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Dieter Dorsch, Measuring the specific gravity of gases and liquids and apparatus therefor ,(1966)