Consider a closed string (a loop) located on a cylindrically shaped space, whose circular cross section represents one finite extra dimension.

 
  • 考慮一條閉弦(一個(gè)圈圈),位于一個(gè)圓柱形的空間中,而圓柱截面的圓周就表示一個(gè)有限的額外維度。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan