Möbius strip
noun/ˈmɜːbiəs strɪp/
/ˈmɜːbiəs strɪp/
(also Moebius strip)
- a surface with one continuous side, formed by joining the ends of a narrow piece of material after twisting one end through 180 degrees
enlarge image麦比乌斯带（只有一面的连续曲面，把一条带子的一端扭转 180 度后将两端连接起来构成）