This kind of resin composite manhole cover with glass fiber and resin as the basic material, curing agent, accelerator as auxiliary material.

这种树脂复合型井盖以玻璃纤维和树脂为基本材料，以固化剂、促进剂等为辅助材料制成。

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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.

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。

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