quality assurance system短语⁷⁰⁷¹⁰ 基本例句 质量保证体系 Our engineering andquality assurance systemguarantees your satisfaction.我们的工程技术和质量保证体系,保证您的满意。 Be responsible for the establishment and maintenance of thequality assurance systemfor purchased products.负责建立并保持采购产品的质量保证体系。