| polishing |
The final treatment of the effluent, often by percolation thru a sand or gravel media.
출처: www.gogreenwastewater.com/terminology.htm
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| polishing |
The process of refining a metal surface by use of a polishing wheel attached to a long-spindled motorized arbor which runs at high speed. Various finishes may be obtained with a wide variety of abrasive compounds applied to the polishing wheels such as rouge--this compound imparts the brightest finish. Other compounds will produce matte finishes, emphasizing the form since which will be rendered less reflective.
출처: www.silversmithing.com/glossary.htm
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