承兑交单

• D / a is short for “ documents against acceptance , ” whereby the collecting bank will release the shipping documents to the buyer without any payment but merely against a written promise upon between the seller and the buyer
  是承兑交单的缩写，在此方式下，代收行向买方交付单据不以后者付款为条件，仅以后者的承兑为条件，所谓承兑就是买方所作的在买卖双方同意的某个将来的日子保证支付汇票款项的书面承诺。