backlogs

n.

an accumulation of jobs not done or materials not processed that are yet to be dealt with (especially unfilled customer orders for products or services)

large log at the back of a hearth fire

同义词：log

something kept back or saved for future use or a special purpose

同义词：reservestockpile

Order Backlogs and Production Smoothing
Patent backlogs, inventories and pendency: An international framework
Quick simulation of excessive backlogs in networks of queues
Quick Simulation of Excessive Backlogs in Networks of Queues
Analysis of Remote Terminal Backlogs under Heavy Demand Conditions
A quick simulation method for excessive backlogs in networks of queues
Large deviations theory and efficient simulation of excessive backlogs in a GI / GI / m queue
Uncapacitated lot-sizing problem with production time windows, early productions, backlogs and lost sales
Stabilizability of production-inventory systems incorporating unfilled-order backlogs with retarded control policies
Rolling horizon heuristics for production planning and set-up scheduling with backlogs and error-prone demand forecasts