At present, there is an accident of railway over the barricade often ผู้จัด thus prepared cars of this thesis is to study the design and structure of the wall beam type electric railway automatic 2 altar beams.Neung study work with the company.XENIX, Lee Electric Tec limited, this thesis discussed the production process. The barricade railway automatically. Installation of automatic barriers as well as the working principle, all tracks
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