作为车辆的重要装备，高速列车一般采用塞拉门来替代普通的折页门结构。 塞拉门在设计制造中面临许多难点，国内对此的研究和实验还很少。
Though there are many difficulties found in design and manufacture of sliding-plug door, analysis and experimental research about them are in rare number.
单门，未锁，便于操作。门折页的设计可使在不使用工具时，拆除门，便于手套或半袖套的维护。
A single, easy to operate handle unlocks the door. The door hinge allows the door removal without tools, facilitating maintenance using gloves or half suit.
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