When this tensor vanishes, the space is calleda flat.当这一张量为零时,空间叫做平直空间.If the circulation vanishes at one instant of time, it must vanish for all times.只要环量在某一瞬间为零, 它就必须永远为零.With this said, the old man vanishes out of si...
Try this tasty dish for supper with a crispy salad.晚饭就着鲜脆的色拉尝尝这道佳肴。Crispy fried noodles. I love them.酥炒. 我喜欢吃.Dining off crispy chicken , Kentucky Fried Chicken, or Daokou braised chicken, what's the difference?香酥鸡 ...