turn-back中文什么意思

转180度

转到反航向

• turn:    vt. 1.转，转动，旋转，使转弯； ...
• back:    n. 1.背，背部；背脊；背面，反面 ...
• back turn:    反作用匝; 后转改变方向; 逆向匝

例句与用法

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1. No turning - back
   没退路了。
2. Two laps ( 5km / lap , each have a turn - back ) . your record will be invalid if you only finish one lap
   禁止，标准最后一项是两个来回。否则认为该选手没完成比赛。我们有工作人员在记录每位选手的跑步圈数。
3. Metro is an effective urban traffic system and its turn - back capacity is a key factor which determines its whole carrying capacity
   摘要地铁是一种大容量、高效率的城市交通方式，而折返能力则是制约地铁通过能力的关键因素。
4. Since life is a long journey with no turning - back , when we start off , we must be aware of what we truly want , and what means most to us , and what we must handle without delay
   既然人生是一趟没有回头的旅程，在开始上路时，我们一定要清楚什么是自己真正想要的，什么对于自己是最重要的，有哪些事情是当下一定要做的。
5. In the end , a feasible scheme is accepted by comparing the proposed options , in line with which a crossover is added in front of shuanglin station in order to improve the turn - back capacity of the station completely
   结论：只有从硬件和软件两方面结合起来共同考虑，才能最大限度地提高列车的折返能力，充分发挥地铁的运输效能。