发明申请
US20120225172A1 DENSITY MODIFICATION 有权
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DENSITY MODIFICATION
摘要:
The present invention relates to a method for modifying the density of a flowable material in need thereof comprising applying highly propagating ultrasonic energy at frequency of between about 16 kHz to about 40 kHz to the material wherein the highly propagating ultrasonic energy is uniformly distributed throughout the material thereby modifying the density of the material.
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