الصفحة الرئيسية > Term: dry cleaning
dry cleaning
The cleaning of coal or ore by air currents as opposed to wet cleaning by water currents. Appliances for the dry cleaning of coal were first introduced about 1850 and since that date a variety of methods have been developed.
- قسم من أقسام الكلام: noun
- المجال / النطاق: التعدين
- الفئة: تعدين عام; Mineral mining
- Government Agency: USBM
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المنشئ
- ed.young
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(V.I.P) 21084 النقاط - 100% positive feedback
(Milwaukee, United States)
