Totalleadtime for an end item, calculated by taking the individual lead times for all items on the critical path through all levels of the bill of material.
最终产品的总共前置时间，以物料清单各层要径所有产品前置时间计算得出。
3
A total of 148 (15%) patients experienced a lead defect, and the median time to lead failure was 1704 days (4.7 years).