Change control is necessary because projects seldom run exactly according to the project management plan.

由于项目很少会准确地按照项目管理计划进行，因而变更控制必不可少。

youdao

C. Procurement Documentation, Contract Change Control System, Payment Schedule, Contract Management Plan.

采购文档，合同变更控制系统，支付进度表，合同管理计划。

youdao

C. Procurement Documentation, Contract Change Control System, Payment Schedule, Contract Management Plan.

采购文档，合同变更控制系统，支付进度表，合同管理计划。

youdao