Energy-saving. punctuality and smoothness are difficult to achieve in the operation of heavy haul train. This paper proposes a multi-objective method for speed curve optimization. Firstly. https://www.ealisboa.com/quick-offer-NEW-LED-Illumivein-Vein-Finder-Transilluminator-to-Find-Veins-for-Phlebotomy-and-IV-must-buy/