| 摘要 |
A washing liquid and a granular substance in the quantity equivalent to or more than the liquid in the specific gravity are accommodated in a barrel in a manner to position the surface of the liquid above the top surface of a granular substance layer at a stationary state of the barrel, and the barrel is swung with an object to be washed which is accommodated therein to wash away stains firmly stuck. In the same manner, various treatment liquid such as a plating liquid and a granular substance which possess conductivity or without conductivity are accommodated in the barrel with an object to be treated. By swinging the barrel, the treatment liquid and the granular substance are stirred and flow in the barrel so that the fluidity of the treatment liquid and granular substance relative to the object to be treated is improved to raise treatment effect and uniformity in the process. Thus, high quality surface treatment can be accomplished in high productivity. All kinds of surface polishing can be effectively conducted.
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