工厂外贸业务常用语大全（三） PPM Percent Per Million 百万分之一 TPM Total Production Maintenance 全面生产保养 MRP Material Requirement Planning 物料需计划 OS Operation System 操作系统 TBA To Be Assured 待定,定缺 D/C Draw
Article 28 Insurance Document and Coverage 第二十八条保险单据及保险范围 a. An insurance document, such as an insurance policy, an insurance certificate or a declaration under an open cover, must appear to be issued
