tandems串翼自行车tandemn.串联；串联式自行车tandem fuel pump串联燃油泵tandem targeting串联瞄靶tandem condenser双定片组电容器tandem cold mill串列式冷轧机tandem satellite衔接随体tandem operation串联工作tandem inversion连续倒位tandem-rotoredadj.有纵列式双旋翼的tandem selection汇接选择tandem expression串联表达