送交者: gyro 于 2009-11-13, 12:29:46:

回答: 你是说飞机无法在真空中飞？那在空气非常稀薄，比如4万米高空如何飞？ 由 coubert 于 2009-11-13, 12:16:40:

• "I don't know how the forward propelling force is generated". hahaha (无内容) - tinaliang (0 bytes) 2009-11-13, 12:32:36 (385566)
  • 为什么笑呀， (无内容) - coubert (0 bytes) 2009-11-13, 12:36:26 (385569)
    • 好笑啊. 你俩文科的? (无内容) - tinaliang (0 bytes) 2009-11-13, 12:40:05 (385575)
      • My major is natural philosophy - gyro (52 bytes) 2009-11-13, 12:41:18 (385576)
        • you move forward by moving media around you backward, like swimming. (无内容) - tinaliang (0 bytes) 2009-11-13, 12:47:36 (385586)

加跟贴