... 平行渡线 parallel crossover 梯线 ladder track 套线道岔 mixed gage turnout ...
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短语
阶梯线
staircase curve
电梯线束线缆
Elevator Harness cable
等梯度线
[数]
isogradient
;
isogradient contours
电梯线
TVVB
;
elevator line
梯度线
[数]
gradient line
阶梯曲线
[数]
step curve
;
[数]
staircase curve
石油梯度线
oil gradient line
直线楼梯
STRAIGHT STAIR
曲线形楼梯
Curved Staircase