2008TB/T 2769-2008 Test method of heavy duty railway motor trolley
1997TB/T 2769.3-1997 Test method for heavy-duty railcars Cooling capacity test for hydraulically driven railcars
TB/T 2769.3-1997 Test method for heavy-duty railcars Cooling capacity test for hydraulically driven railcars was changed to TB/T 2769-2008 Test method of heavy duty railway motor trolley.