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train dowty retarder
Train dowty retarder maintenance worker: stepping on "mushrooms" more than 1,400 times a day
Peng Hui, the maintenance worker of the dowty retarder, has changed into dark blue cotton work clothes and thick-soled shoes, pushing a tool cart, carrying a tool bag and a water bottle, and starting
An introduction to the cushioning cover of the train dowty retarder
When the train passes, the vibration will cause the surrounding gravel to roll down and shrink the cavity, which will cause damage to the base of dowty retarder, which will need to be stopped for main