| 摘要 |
An assembly including an arm having a rotatable brush for cleaning, a vehicle, the arm being rotatable about a generally vertical axis to move the brush between a parked position and a deployed position, the arm being supported by a mechanism such that the arm is in a raised position when the brush is in the parked position and the arm is in a lowered position when the brush is in the deployed position and the arm is biased to move the brush towards the deployed position by the mechanism |
