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。
2
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.