... normal force法向力、正交力 normal frequency furnace工频电炉 normalizing furnace正火炉、常化炉 ...
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论述了有芯工频感应电炉生产磷脱氧铜圆锭不同结晶器和不同铸造保护气氛对铸锭质量的影响。
Influence of different crystallizer and cover agents on surface quality of round Cu ingot with P deoxidation in channel induction furnace was expounded.
论述了中频感应电炉的特点，与工频感应电炉熔炼特性的比较及其操作注意事项。
Melting characteristics of MF induction furnace have been expounded with comparison with that of mains frequency induction furnace as well as concerns in operation.
年，北京市机电研究院与北京玛钢厂研制成功工频无芯塞杆底注式保温浇注电炉。
In 1980, the institute and Beijing municipal electrical factory has successfully developed line frequency coreless bathroom plug stem bottom note type electric insulation casting.
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