本文以元素分析的碳含量为标准，用esr方法研究了催化裂化催化剂的积炭。
Coke formed on cracking catalysts was investigated by ESR technique and elemental analysis.
介绍了韶钢低碳拉丝用钢抗拉强度偏高的情况，分析表明钢中微量元素铜、砷、锡含量高是导致低碳拉丝用钢强度高的主要因素。
Low carbon steel for wire drawing has higher tensile strength in SGIS. The analysis showed that higher tensiles strength was mainly originated from the high content of Cu, As, Sn in steel.
介绍了韶钢低碳拉丝用钢抗拉强度偏高的情况，分析表明钢中微量元素铜、砷、锡含量高是导致低碳拉丝用钢强度高的主要因素。
Low carbon steel for wire drawing has higher tensile strength in SGIS. The analysis showed that higher tensiles strength was mainly originated from the high content of Cu, As, Sn in steel.
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