definite undertaking of payment

...evocable Credit)的特点是开证行 的确定付款承诺(Definite Undertaking of Payment)和信 用证的不可撤销性(Irrevocability)。

definit... ... definite undertaking {n.}明确承诺 definite undertaking of payment {n.}确切保证付款 definite value {n.}定值 ...