second carrier meaning in English

第二运送人
二程船

According to the shanghai sinotrans changjiang shipping co . ltd in chapter three , it mainly discusses the operation modality and some relative contents in the field of the booking of minor and main line freight space , the application of minor and main line transship article , measure and share of the second carrier ' s freight , document flow of transshipment and so on
论文第三章针对上海中外运长江运输有限公司所从事的长江集装箱运输，从支、干线舱位的洽订；支、干线中转条款的应用；中转运费计收分摊；中转单证流程等方面进行运作模式和相关内容的研究。
Some methods are put forward for improving the convergence rate of the coa ( chaos optimization algorithm ) based on second carrier wave , which can greatly increase the velocity and efficiency of the first carrier wave to search for the optimal point at comparatively rough precision , and the refined search can be performed during second carrier wave more quickly as well as accurately
摘要针对一般的基于二次载波的混沌优化方法收敛慢的弱点，提出了一些改进的方法，大大提高了首次载波寻找最佳点大概位置的速度和效能，同时能更快更精确地实现二次载波的精细搜索。