backwardi滞后
backwardadj.向后的;落后的adv.向后
backwarddirectedadj.方向向后的
backward surgingadj.逆涌(后涌)
backward counter反向计数器,减法计数器
backward tension反张力
backward tracing反向追踪
backward skating倒滑
Backward Handoff
backward welding向右焊,退焊,右焊,后退焊,后倾焊
backward haulage逆向牵引
backward finesse逆飞