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来源:雅诚德英语网
Among the high temperature nonferrous metals are molybdenum, niobium, tantalum, and tungsten.
高温有色金属包括钼,铌,钽,钨。
Among the high temperature nonferrous metals are molybdenum, niobium, tantalum, and tungsten.
高温有色金属包括钼,铌,钽,钨。