standing order
noun [ C ] UK uk/ˌstæn.dɪŋ ˈɔː.dər/ us/ˌstæn.dɪŋ ˈɔːr.dɚ/
（客户向银行下达的）定期付款指令，按期付款委托书
an instruction to a bank to pay a particular amount of money at regular times from a person's bank account to another bank account
Compare: direct debit