1) dual tandem gear train
双串联式齿轮系
3) tandem articulated gear
串联式减速齿轮
4) single tandem gear train
单串式齿轮系
5) tandem articulated gear
串联式减速齿轮箱
6) tandem articulated type reduction gear
串行联结式减速齿轮
补充资料:串联式空习装药战斗部
[英文]:series shaped-charge warhead