Methylglyoxyl is not only a very reactive glycotoxic component but also an active precursor to inflammation.
丙酮醛不单单是一种活跃的糖毒性物质，同时也是炎症反应的前体物质。
A vitamin precursor that the body converts to its active form through normal metabolic processes. Carotene for example is a provitamin of vitamin a.
维生素原一种由身体通过正常新陈代谢过程，将其转化成活跃形式的维生素的前体，比如，胡萝卜素是维生素a的维生素原。
A carbon precursor like methane can be vaporized using heat where the melted precursor reacts with a catalytically active substrate to form graphene on the surface.
类似于甲烷的碳前体可吸热蒸发，熔化的前体和具有催化活性的基底相反应并在表面形成石墨烯。
The sulfidation performance of iron oxide prepared from various precursors was investigated, and the ferric nitrate with better sulfidation performance was chosen as precursor of active component.
实验通过对各种铁盐前驱物制备的氧化铁硫化性能的考察，优选出硫化性能好的硝酸铁作为活性组分前驱物；
The sulfidation performance of iron oxide prepared from various precursors was investigated, and the ferric nitrate with better sulfidation performance was chosen as precursor of active component.
实验通过对各种铁盐前驱物制备的氧化铁硫化性能的考察，优选出硫化性能好的硝酸铁作为活性组分前驱物；
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