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质量分数 zhìliàng fēnshù
met.	mass fraction; mass percent; weight percent (As seen in part (b) of Figure 9, the carbon content at the critical point is about 0. 688 weight percent and the mean value of the decarburization rate is about 0.102 weight percent/minute, with standard deviations of 0. 11 and 0.01, respectively. 如图 9(b) 所示，临界点含碳量约为0. 688% (质量分数)，脱碳速度平均值约为0. 102% (质量分数)/分，标准偏差分别为 0.11% 和 0.01%。); weight percentage

质量 分数 : 27 phrases in 14 subjects

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