standard guard
... standard group 标准群 standard guard 标准防护器 standard guy thimble 标准拉线牵线环 ...
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目的满足国家标准GB18871 - 2002电离辐射防护与辐射安全基本标准的同时，优化设计医用加速器室的辐射屏蔽防护。
Purpose to meet the government standard basic criterion GB18871-2002 for radiation protection and safety, and to optimize the design of the shielding protection of medical linear accelerator.
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