critical carbon content(carbon content at critical point: Below a critical carbon content the rate of mass transfer is insufficient to react with all the injected oxygen. 低于临界含碳量时，传质速度不足以维持与喷人的全部氧进行反应。)
carbon content at critical point(【技】在钢水冶炼过程中，当钢水含碳量较高时，脱碳速率的主导限制因素是氧的传质速率；随着脱碳反应的进行，钢水中含碳量降低到一定的浓度值后，脱碳速率的主导限制因素由氧的传质速率转变为碳的传质速率，脱碳速率出现明显下降，此时的碳含量称之为临界含碳量。: 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/ min, 标准偏差分别为 0.11和 0.01。)
carbon level(A few steelmaking shops in North America have started using light sensors to dynamically estimate carbon levels in the low carbon heats. 北美的几个炼钢车间现已开始使用光学传感器动态测定低碳钢炉次的含碳量。)
carbon readings(The carbon readings thus taken are fed into the process computer which determines the additional amount of oxygen to be blown and the amount of coolants to be added. 将由此获得的含碳量读数输人到过程计算机，该计算机即可确定吹氧增量和冷却剂添加量。)
carbon content in steel bath in vessel(The light meter system can correlate the characteristics of the light intensity curve with the carbon content in the steel bath in the vessel. 该光学仪表系统能建立起发光强度曲线特点与转炉钢水熔池含碳量之间的对应关系。)
