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jockey wheel中文是什么意思

发音:  
用"jockey wheel"造句"jockey wheel"怎么读"jockey wheel" in a sentence

中文翻译手机手机版

  • 可放下的半拖车支撑轮
  • 张紧滚筒
  • 张紧轮
  • 支托轮

百科解释

A jockey wheel is a retractable adjustable-height wheel used on the front of trailers with either a single axle (two running wheels) or more close-coupled axles at or near the centre of gravity whereby without additional support, the trailer would not remain 'level'. The jockey wheel is situated close to the towing hitch and has a built-in screw jack to enable the trailer nose to be lifted over the tow ball of a car or other powered vehicle.
详细百科解释
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