The carbon fiber-reinforced Polylactide (C/PLA) was prepared for bone fracture fixation, and the carbon fiber was treated by surface soakage with concentrated nitric acid.
制备了碳纤维增强聚乳酸（C/PLA）骨折内固定材料，对碳纤维进行了浓硝酸表面处理。
Nitrosamines are formed in acidic conditions, such as those afforded by stomach acid, but vitamin C inhibits their formation, by converting nitrite to nitric oxide.
亚硝酸盐存在于人类的唾液和某些特定食物保护剂中，它们能转化为致癌物质亚硝胺。亚硝胺主要在酸性环境中形成，例如胃酸条件下。
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