是指工序内零部件等待被加工（或等待被运输）所花费的时间。这种等待时间分为两类，即不同批量零件之间的等待时间和同一批量零件之间的等待时间。造成第一类等待时间的原因是生产过程的非均衡化；造成第二类等待时间的原因是生产运输批量过大。等待时间 Is the time it takes for parts within a process to be processed (or waiting to be shipped). This waiting time is divided into two categories, namely the waiting time between different lot parts and the waiting time between the same lot parts. The reason for the first type of waiting time is the unbalance of the production process; the second type of waiting time is due to overproduction of production and transportation. waiting time