birth是什么意思

用法例句

According to the features of a supply chain,the index of product output cycle time which is based on the process of a supply chain is studied.

分析了供应链绩效评价特点 ,根据供应链的特征 ,深入研究了基于供应链业务流程的循环期绩效评价指标 ,并建立了确定供应链产品出产循环期指标的数学模型 。