ladderyadj.梯状的
laddern.阶梯;梯子;梯状物
Ladder - like therapy阶梯性疗法
ladder bucket excavator多斗挖掘机
ladder of human thought人类思维的阶梯
ladder-shaped network梯形网络
ladder siloxane polymer梯形硅氧烷聚合物
ladder shaped resistance梯形电阻
ladder-spiral approach阶梯螺旋教学法
Ladder-tailed Nightjarn.梯尾夜鹰
ladder-way compartment梯子间
ladderlike power station梯级电站群