... blister and refined unwrought copper粗炼的和精炼的未锻铜 liquation process熔析法 -金属精炼 Refined paraffin waxGB446-1993全精炼石蜡 ...
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With the original process, the qualification rate of the liquation carbonide was only 75.
原工艺下液析碳化物合格率仅为75。
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