这个组织还建立追踪整体供需链条的系统，这个跟踪系统从田地到货架跟踪有机棉。
The organization has also developed an online tracking system that traces organic cotton’s journey through the entire supply chain, from the field to the store rack.
采用多刚体方法对链条链轮系统的驱动过程进行了建模和动力学分析。
This paper deals with the driving process of chain sprocket system with the multi rigid body dynamics method.
安全生产是一个庞大的系统工程，安全科学研究工作是这个庞大系统工程中的重要链条之一。
The study work of safety science and technology is one of the important chains in the great system engineering.
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