The process of research and manufacture and certificating methods of national reference materials-fiber polyester chip are introduced.
介绍纤维级聚酯切片国家标准样品研制过程、定值方法。
Aiming at the insufficiency of traditional analysis and certificating methods of maintainability, a certificating method of ship maintainability based on virtual reality technology is put forward.
文章针对传统维修性分析验证方法的不足，提出了运用虚拟现实技术进行舰船维修性验证的方法。
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