极周期的英文

polar period

• 极:    I the utmost point ...
• 周期:    period; cycle; cir ...
• 极周区:    perpolar zone

例句与用法

1. Several kinds of the anode geometry size and the structural parameters and collocations were analyzed . the reasonable structure and operation method of the aluminum cell anodes were proposed
   摘要通过对国内外几种阳极几何尺寸、配置的结构参数分析；从铝电解槽换极周期、阳极生产工艺等方面提出了铝电解槽阳极的合理结构，操作方式。