简述6502电气集中车站调车转线作业所形成的两种不同类型的中途返回进路。
Two different types routes for midway return operation during shunting in 6502 relay interlocking for station are illustrated.
采用这种方法不但可以准确判标签运动方向，而且可以判断标签中途返回等一些复杂逻辑。
In this way, we could not only judge the direction of movement of tags accurately, but also judge other complicated logic, e. g. the midway return of tags.
当中途爬到一半的时候，一个路过的向导告诉我们，如果不能在12：30之前到达顶峰，那么就立即返回。
Halfway up, a passing guide told us if we couldn't get to the top by 12:30 at the latest, then to turn back.
体育比赛中的“背靠背”是指一支球队连续打了两场客场比赛，中途没有返回主场休息或者在主场进行比赛。
In sports, when a team has "back-to-back" games, it means that they must play two games in a row away from home before returning for either a rest or a home game.
维多利亚-贝克汉姆经历了一个相当波折的周末，她乘坐的本机原定从伦敦飞往洛杉矶，由于中途发生机械故障，最后不得不折返回希思罗机场。
Victoria a Beckham had quite an eventful weekend: She was flying from London to LA when her flight had to return to Heathrow Airport because of a technical issue.
维多利亚-贝克汉姆经历了一个相当波折的周末，她乘坐的本机原定从伦敦飞往洛杉矶，由于中途发生机械故障，最后不得不折返回希思罗机场。
Victoria a Beckham had quite an eventful weekend: She was flying from London to LA when her flight had to return to Heathrow Airport because of a technical issue.
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