引证释义 (1).环绕北极星。 《文选·张衡<西京赋>》：“譬众星之环极，叛赫戏以辉煌。” 薛综 注：“极，北极也。环，犹绕也。” (2).喻拱卫天子。 宋 王禹偁 《右卫上将军赠侍中宋公神道碑》：“罢殿侯邦，乃尹环极。能执干戈，以卫社稷。”
开环极点 [自] open loop pole
闭环极点 close-loop pole
环极涡旋 circumpolar vorticity ; circumpolar vortex
环极西风 circumpolar westerlies
南极平流层环极涡旋 Antarctic stratospheric circumpolar vortex ; ASCV
环极植物 circumpolar plant
闭环极点方程 Equation for closed-loop poles
环极冰川作用 circumpolar glaciation
环极海流 circumpolar current
环极水域 circumpolar water
人们在感叹环极楼的建筑艺术时，也不无敬佩建筑师的富有创造性的反叛精神。
Huanji Building, thereupon, is also called "rebellious Building", which, not only admired by its architectural arts, but also the rebellious spirit of the architects.
在环极楼的中心点上，用力跺脚或放声呼唤、歌唱，可以听到十分明显的回声，好像北京天坛的回音壁。
Stomping, crying or singing in the center of Huanji Building, you can hear clear echoes, as do in the Echo Wall of Temple of Heaven in Beijing.
环极楼还有一个很特别之处：楼内部中心环无祠堂之设，而是空旷的院落。这在永定众多土楼中是绝无仅有的。
Huanji building has a special feature-there is no ancestral hall inside, with empty courtyard instead, which is unique among all the earth buildings in Yongding County.
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