main electrod
极昼 [天] polar day ; Mitternachtssonne ; polar day
每昼夜极大值 diurnal maximum
昼侧椭圆极光 dayside auroral oval
极地永昼 perpetual day
昼侧极光 dayside aurora
极白之昼 Brightest Day
·2,447,543篇论文数据，部分数据来源于NoteExpress
碰到24小时的 极 昼（或 极夜）时，为了人们有个栖闲之所，休闲室内设置了电视机、台球桌，还有大量供应的啤酒和苏格兰威士忌。
For those needing an escape from the 24-hour sunlight (or 24-hour darkness), there are lounges with televisions, a pool table and a good supply of beer and Scotch whisky.
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