极性时 meaning in English
polarity chron
Examples
- If unclear or unknown of polarity of circuit indication . non polar capacitor is recommended to be used
在电路回路中如不清楚或不明确线路的极性时，则建议使用无极性电解容器。 - Viewed at the surface of the model earth , the reversal of the dipole occurred when the reversed flux patches begin to dominate the original polarity on the core - mantle boundary
由模型中的地球表面看来，磁偶极的反转是发生于地核?地函交界上反向通量斑块开始超过原本的极性时。