| 摘要 |
PROBLEM TO BE SOLVED: To perform alkali degreasing without using an alkaline solution. SOLUTION: In an ultrasonic cleaner 1 where a work 3 is put inside a cleaning tank 2 containing free abrasive grains 4, and is subjected to cleaning by ultrasonic vibration, mica is used as the free abrasive grains 4. COPYRIGHT: (C)2005,JPO&NCIPI
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