请教一个问题，这句话中的 line-out of equipment 是什么意思？谢谢！

Start-up, which is potentially a highly hazardous activity, is that phase of the project when

the commissioning activities have been completed and process feedstocks for production purposes is introduced for the first time (initially at low feed rates); also adjustment of operating conditions (temperatures, pressures, etc), line-out of equipment at specified operating conditions, and increasing feed rates in increments to design capacity. The start- up phase is complete when sustained manufacture of on-specification products has been achieved.

开车是一种潜在高危险的活动，在项目的这个阶段，试车已经完成，并且首次通入生产用的工艺原料（刚开始给料流量小）；还有操作条件（温度、压力等）的调节，在规定操作条件下设备贯通，并逐渐增加给料量至设计能力。当持续生产出合格产品时开车阶段完成。