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提高行车速度是提高铁路运输能力的主要措施之一。道岔的过岔速度是控制行车速度的重要因素。解决道岔的过岔速度的主要措施是铺设提速道岔。
Improving the speed of traffic is one of the main measures to improve the railway transport capacity. Turnout speed turnout is an important factor in controlling the speed. The main measure to solve the problem of turnout speed is to lay speed-increasing turnout.