n-fold pole n 阶极点
N pole 北极
N-pole N极
wooden n pole 木柱
pulsation n pole 脉动极
n-order pole n级极点
wooden n pole line 木杆线路
gin n pole derrick 桅杆式起重机
n-th order pole n级极点
以上来源于: WordNet
The step through test and independent activity were used to observe effect of uneven constant magnetic field pole N and S on learning and memory impairment induced by hypobaric hypoxia .
用避暗实验法和自主活动法，分别观察了非均匀恒磁场N极、S极对急性低压缺氧引起的学习记忆障碍的影响。
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