... pantofle 拖鞋 pantograph arm 缩放仪臂 pantograph collecter 架式集电器 ...
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double arm pantograph [车辆] 双臂受电弓
single arm pantograph 单臂受电弓
pantograph h arm 缩放仪臂
·2,447,543篇论文数据，部分数据来源于NoteExpress
The gap between the pantograph, which is the arm on top of the train car that draws power from overhead lines, and the catenary system must remain within a precise distance and tension.
WSJ: Commuters warned: Summer heat may slow Metro-North
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