| 摘要 |
The object of this invention is to provide a cleaning method in accordance with the degree of soil and type of contaminant of a surface to be cleaned of a cleaning target. In order to achieve this object, in a method of cleaning a cleaning target, including an electrical component, with dry ice, during a process of blasting dry ice toward a surface to be cleaned from a location where the dry ice is stored, a size of the dry ice is adjusted, so cleaning is performed while a cleaning performance of the dry ice is changed in accordance with a type of soil or contaminant of the surface to be cleaned.
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