polex肛上板
polen.杆;柱;极点v.(用杆)支撑Pole.n.波兰人
pole-zero analysis极零分析
pole piece type head极片式磁头
pole of the ecliptic黄极
pole-changing base转极座
pole-zero geometry极零点几何分布
pole changing switch换极开关
pole stepping collar上杆钉抱箍
pole-changing relay换极继电器
pole type transformer杆式变压器,柱上变压器
pole type singularity极型奇点