This is typically done on a periodic basis, and is where the meter and accounting model comes in.
这通常是定期实行的，同时也是要用到计量和统计模型的地方。
2
Public corporations must comply with burdensome periodic reporting requirements and bear the corresponding increase in record keeping, legal and accounting expenses.
公众公司必须遵守任务繁重的定期报告的要求，还要保留记录、承担法律和会计方面相应增加的费用。
3
The periodic system of inventory accounting requires that acquisition of merchandise be recorded by debits to a purchases account.