1. Loop Device for data transmission between track and train and/or train and track. May be a short loop, a medium loop or a long loop. 环线地车和/或车地间的数据传输设备。可以是短环线，中环线或长环线。
2. Three loop configuration for whole control system is built: the grid current loop, Z-Source capacitance voltage loop and PV array output voltage loop. 通过电路结构和控制目标将变换器控制系统分为三个闭环结构：并网交流电流环、Z源电容电压环、光伏阵列输入电压环。
3. For example, to nest one loop(the nested loop)within another loop(the nesting loop; to nest one subroutine(the nested subroutine)within another subroutine(the nesting subroutine. 例如，在一个循环中嵌入另一个循环，在一个子程序中嵌入另一个子程序。
4. To analyse multi-loop negative feedback amplifier, a method with block diagram topology of many times loop-opening is put forward in this paper. 本文针对多环负反馈放大电路的分析问题，提出了多次拆环方框图分析法。
5. The associated topology is the constructible topology on X. 相应的拓扑是X之上的可构造拓扑。
