The author initially reviews some relevant theoretical principles—linguistic theories, language learning theories and syllabus theories for material evaluation and development respectively.
随后又对英语教材评估理论进行了综述并在此基础上设计了本次评估的框架模式。
Execute process of product development including design, analysis, material selection, evaluation and qualification to meet standards.
执行产品开发过程，包括：设计、分析、材料选择、评估以及符合标准的资格。
As water resource is the indispensable material in life and its security is emergent, the development of water security evaluation and assurance system is desiderated so that we can recognize the.
由于水资源是维持生命所必需的物质，其安全保障问题迫在眉睫，因此亟需建立起水安全评价体系及水安全保障体系，通过系统的方法和技术认清水安全形势，探讨保障水安全的措施和方法。
As water resource is the indispensable material in life and its security is emergent, the development of water security evaluation and assurance system is desiderated so that we can recognize the.
由于水资源是维持生命所必需的物质，其安全保障问题迫在眉睫，因此亟需建立起水安全评价体系及水安全保障体系，通过系统的方法和技术认清水安全形势，探讨保障水安全的措施和方法。
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