开信用证
open a letter of credit
通用信用证
ordinary letter of credit
旅行信用证
traveller's letter of credit
可撤销的信用证
revocable letter of credit
不可撤销的信用证
irrevocable letter of credit
循环信用证
revolving letter of credit
可转让的信用证
transferable letter of credit
开立信用证贷款
take out a letter of credit loan