trackingn.跟踪；按学生能力分组动词track的现在分词形式.trackn.轨道；跑道；踪迹；小路；乐曲v.追踪；跟踪tracking current control电流追踪tracking train intervals追踪运行间隔track lifting J-Horner起道机, 起轨器, 起轨千斤顶track-command guidance[电] 轨道命令指导tracked mud on the rug.在门口地毯上把泥浆蹭去Tracking Operation Report跟踪活动报告track to earth insulation轨道绝缘track gauges of Brazilian巴西铁路货车track radius of curvature沟曲率半径Tracking Radar Take-off跟踪雷达起飞