A rare galaxy type, polar ring galaxies have a substantial population of stars, gas, and dust orbiting in rings nearly perpendicular to the plane of the galactic disk.
极环星系是种稀有的星系类型，它们有着几乎和银盘平面垂直，呈环形公转的大量的恒星、气体和星尘。
A new type of strongly polar organic polymer porous layer open tubular column (OPPLOT-A) was prepared by in situ copolymerization of acrylonitrile and divinylbenzene.
以丙烯腈为单体，二乙烯苯为交联剂，采用原位聚合法制备出了强极性的有机高聚物多孔层开管柱- OPPLOT - A型柱。
The computation of mass center line in the arc and radial line with arc type is made by using the polar equation of circular.
采用极坐标方程，计算圆弧型和径向线加圆弧型的叶型重心联线；对径向平衡方程的离散方式、迭代方向、迭代方式和迭代收敛准则进行改进。
A polar coordinates type fuzzy excitation controller is designed.
设计和实现了一种极坐标型的模糊励磁控制器。
The solution type also had significant effect on the selectivity of 1-bromo-hydrocarbon, the no polar solution was favorable for the selectivity.
溶剂对1-溴代烷烃的选择性也产生显著的影响，非极性溶剂有利于1-溴代烷烃选择性的提高；
Iridescence can happen to any type of cloud, but is most common in stratospheric clouds in polar regions.
彩虹色色泽可以出现在任何一种云，但还是最常出现在极地的平流层云。
Iridescence can happen to any type of cloud, but is most common in stratospheric clouds in polar regions.
彩虹色色泽可以出现在任何一种云，但还是最常出现在极地的平流层云。
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