Yes, 重复and 循环 together is a bit awkard. Good suggestions of digitalsatori. But, I don't know. Basically subscription is now equated with recurring entry. Subscription seem to be a bit more than the recurring entry, it also states the duration and the frequency of the recurring entry. So that is why I suggested the less than ideal "期" . Perhaps a better idea would be to call it a batch or series. What about “系列“?
Also, now the term "凭证“ is introduced. I know it is used in Chinese accounting software to indicate the basic record of a transaction, but it might be confusing here. In OpenERP the basic transaction is the journal entry for which the term (日记帐)分录 is suggested. 分录 is understood to be a complete journal entry not just a line. I tend to think that the concept of 凭证 doesn't lend itself very well for an international system as OpenERP. I would steer away from it, and not use it at all (or only in the original sense of voucher).
So building on digitalsatori's suggestions I would propose the following:
Subscription 循环分录系列
Subscription Entries 循环分录系列
Running Subscriptions 执行中的循环分录系列
New Subscription 新建循环分录系列
Subscription Lines 系列分录
What does everybody think?