1. The magnet creates a field that changes the polarity of a tiny, tiny portion of the metal particles which coat each platter's surface. 这个磁体创建一个磁场,能改变覆盖在磁盘表面的小金属粒子的极性。
2. The interpole dimension is the dimensional character of physical polarity. 极间维是物理极性的维度表征。
3. There are impact factor to be discussed such as solvent polarity and nucleofuge. 准备讨论的影响因子包括溶剂极性和离核试剂。