...入端接输入讯号,另一输入端接5 V (C) 使用反或闸 ( NOR gate ),一输入端接输入讯号,另一输入端接5 V (D) 使用或闸 ( OR gate ),一输入端接输入讯号,另一输入端接5 V 的 第三部份:引擎原理及实习 ( 第25 至40 题,每题2.5 分,共40 分 ) 的 25.a有关直列...
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司闸员,制动手操纵、检查或维修闸的人,通常指协助列车员和检查火车制动器性能的铁路雇员。
One who operates, inspects, or repairs brakes, especially a railroad employee who assists the conductor and checks on the operation of a train's brakes.
此外,为了防止深孔闸墩部位的裂缝发生,设计采用对闸墩施加曲线形预应力锚索以消除或减小拉应力。
Moreover, curve prestressed anchorage cables are applied to eliminate or minish the tensile stress to prevent the cracks appearing on the deep orifice gate blocks.
文中讨论了影响选型的诸多因素,如闸室平面尺寸、输水阀门工作条件、单级或多级船闸的影响等。
Besides, many affecting factors, such as lock chamber dimensions, lock valve conditions and single or multi flight lock situations have been discussed.
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