service department allocated cost variance

例句：

1. 1.The company's service department has identified a significant allocation cost variance in the recent quarter.
   该公司的服务部门在最近一个季度发现了显著的成本分配差异。
2. 2. The variance in costs between departments is due to differences in allocation practices.
   各部门成本之间的差异是由于分配实践的不同。
3. 3.The variance was caused by an oversight in the budgeting process.
   这种差异是由预算过程中的疏忽造成的。