自由构形是超平面构形中一类重要的构形.Free arrangement is a very important kind of hyperplane arrangement.又, X中超平面为T—列闭当且仅当它为T~ -— 闭.Also, a hyperplane in X is Tsequentially closed iff it is T ~ - - closed....
这些云带必定引起行星反照率的经向不对称性.These bands must introduce longitudinal asymmetry in the planetary albedo.如果恒星的光谱已知, 就可得出尘埃的反照率.If the stellar spectrum is known, the albedo of the dust can be obtained.有云区也可能是输射亏损区,因为云有较高的反照率.Cloudy...
不过，他最宝贵的时光将在自己的农场里平静地度过。His most prized time, though, will be spent quietly on his farm.“请原谅我礼数不周，”她平静地说。“我忘了自我介绍了。”"Forgive my manners," she said calmly. "I neglected to introduce myself."“玛丽·安还好么？”——“她很好，”她平静地说。"Is Mar...