refining
精製
Continuous distillation
Natural gas processing
Refinery
Wafer (electronics)
Air separation
/suto3/google.iconrefining
/suto3/Google画像検索.iconrefining
/suto3/Google定義検索.icon refining
/suto3/wikipedia.iconrefining
/suto3/weblio.icon refining
/suto3/kotobank.icon refining
/suto3/jisho.icon refining