backlogn.积压待办事项；存货；垫底大木头v.积压backlog of demand没有得到满足的需求backlog of orders现有定货量,已接受订货总数backlog controller积压任务控制器backlog of business现有定货量backlog correlation持续关联backlog of refugees滞港难民backlog depreciation累积未计折旧backlog of unfilled orders[经] 未完成订单Backlog of Maintenance and Repair保养与维修应急储备