normal polarity

基本解释

For silica-based normal phase chromatographic columns a solvent washing system with increased polarity is effective.
硅胶基质正相色谱柱用极性逐渐增强的溶剂系统冲洗；
It is generally acknowledged that geomagnetic polarity has reversed many times in geological history and an abnormal geologic phenomenon is the Cretaceous normal superchron(CNS).
地球磁场多次发生南北（正负）磁极位置的变换和白垩纪超静磁带（CNS）的异常现象，这已为大家所公认。
Paleomagnetic measurements demonstrate that the Jijiagou section which is the stratotype one of Baode Stage of the Neogene in China records 12 normal and 11 reversed polarity zones.
古地磁测量表明，中国新近系保德阶界线层型，山西保德冀家沟剖面记录了 12个正极性段与 11个负极性段。