多级注水泥作业用来在对长套管柱注水泥时避免使地层破裂。
A multistage cement job is used to avoid fracturing the formation when cementing long casing strings.
利用上述先进的管理模式，提出了一种多层作业计划和多级调度的车间生产管理系统体系结构。
Applying the described production management mode, the paper proposes multi-layer hierarchy workshop management system frame of production planning and scheduling.
多级网络计划能快速地处理层次复杂、作业数较多、动态调整要求高的项目计划。
Comprehensive network plans can handle construction project plan rapidly which is complex levels, a large amount of work to do and requires developmental adjustment.
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