back track meaning in English

夏日星
由原路退回
艉迹

Tom turned upon the back track at once , and hurried his steps
汤姆立即按原路返回，步伐很快。
On the practice of and considerations about the western database establishment with back tracking method
西文图书回溯建库实践与思考
Instruments can be automatically controlled by using a device called a sequencer . this allows pre - recorded backing tracks to be prepared and modified during a live performance
一种称为音序器的设备可以自动控制这些设备，这样就可以在现场演出期间对预先录制的回放程序进行准备和修改。
This paper presents a comprehensible mathematics description of the joint probabilistic data association ( jpda ) algorithm . in order to reduce the time ? pace complexity of the jpda algorithm , the method of dividing validation matrix based on the . back track ? pruning technique is proposed in this paper
本文以易于理解的方式给出联合概率数据关联（ jpda ）算法一个清晰的数学描述，并提出基于回溯剪枝技术拆分有效矩阵，以降低jpda计算的时空复杂度。