a payment or serious payments 一次或多次付款 abatement 扣减 absolute and unconditional payments 绝对和无条件付款 accelerated payment 加速支付 acceptance date 接受日 acceptance 接受 accession 加入 accessories 附属设备 accountability 承担责任的程度 accounting benefits 会计利益 accounting period 会计期间 accounting policies 会计政策 accounting principle 会计准则 accounting treatment 会计处理 accounts receivables 应收账款 accounts 账项 accredited investors 经备案的投资人 accumulated allowance 累计准备金 acknowledgement requirement 对承认的要求