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 and positioning跟踪定位
track construction train铺轨列车
track building machinery筑路机械
track laying measurement线路铺设测量
Track Monitor Supervisor轨迹监控员
track inspection railcar轨道检查车
tracking missile with TV电视制导导弹,电视跟踪导弹
tracking and controlling跟踪控制
track construction crane装轨排吊车
track gradient in tunnel隧道内坡度