贸易里面的down payment at shipping什么意思?

贸易里面的down payment at shipping什么意思? 求down payment 和 mortgage 的区别. first payment&down payment我想知道这两个单词的意思...它们的区别是... 贸易里面的Tariff Quota啥意思? we accept 50% down payment document against payment.里面的against 有劳赐教. Down payment 和 advance payment 有何区别? 皮革贸易里面问皮子的颜色比例英文怎么说? down payment这短语什么意思? mortgage 和 down payment 总是搞不清, 英语翻译30% as down payment at order against an Advance Payment Bond expiring at shipment or pro rata with the shipment.70% under irrevocable L/C confirmed by first class European bank payable in Italy,negotiable and against shipping documents 英语翻译首付房款为买房所付的首付款.谁来鉴定一下,是head payment 还是 down payment? look down on和look down at的区别? 急求!China Balance of Payment 英语分析!1.Overall Balance 总差额2.结构分析 贸易余额 BCA　BRA BKA3.对不平衡的解决方法要英语的! recieve payment的意思 信用证:PAYMENT UNDER RESERVE/GUARANTEE NOT ALLOWED 我司收到一个阿联酋的信用证,里面有一句:PAYMENT UNDER RESERVE/GUARANTEE NOT ALLOWED! 三角贸易 最主要的贸易是什么 initial payment和down payment有什么区别呀?如题