bulging(If the rate of heat removal is excessive and/or uneven, thermally induced stresses, which may cause longitudinal cracks, are generated in the shell. On the other hand, insufficient heat removal can lead to a thin strand shell that is more prone to bulging and breakouts. 如果散热速度过快和/或不均匀，就会在铸坯壳中产生可能会引起纵裂纹的热感应应力。另一方面，散热不充分则可能导致薄坯壳，它更倾向于引起铸坯鼓肚和漏钢。)
expansion program(【参】本例句英文摘自美国英文原版文献。在美国， ton 即美吨，约等于 907. 2kg。 故本例句中的 from 550, 000 to 1 million tons 译成了 "由55万美吨提高到100万美吨"。有关 ton 的含义与量值，: Tuscaloosa Steel has completed a $154 million expansion program that has increased annual capacity from 550, 000 to 1 million tons. 塔斯卡鲁萨钢公司现已完成了耗资 1. 54 亿美元的扩建规划，将年生产能力由55万美吨提高到100万美吨)
