by-product and scrap [工经] 副产品及废料
scrap preheated by furnace 炉料预热
This article reports on a method of retrieving cobalt metal and tungsten carbide from hard alloy scrap by the sulphate method.
介绍了用热的浓硫酸处理废硬质合金,回收金属钴和碳化钨的方法。
Preheating scrap by flue gases of electric furnace is an energy-saving technology, which has been developed and applied by foreign country for a long time.
电炉烟气预热废钢是一项节能降耗的新技术,国外已开发和使用。
Feasibility to produce flake aluminum powder from aluminum foil scrap by dry ball milling in inert nitrogen atmosphere with a few fraction of oxygen was investigated.
对在氮气惰性气氛下,利用废弃铝边角料生产片状铝粉的可行性进行了研究。
Dealers are required to make the trade-ins unusable by destroying the engine, then recycle the old vehicles into scrap metal.
VOA: special.2009.08.07
One early submission is a dice game made of scrap material by an inmate who also included detailed, handwritten instructions on how to play the game he invented in his cell.
VOA: standard.2009.10.21
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