Additives can be added in different physical forms and this study also looks at the performance of a powder blends versus a pelletized or No Dust Blend (NDBs) of different antioxidants.

• 添加剂能够以不同的物理形态存在，这次研究也可看成是不同抗氧剂以粉末状形式存在时的性能与粒状、非粉状混合物存在时的性能的比较。