信号表示器(signal indicator)用以表示某些与行车有关设备的位置和状态,或表示信号显示的某些附加意义的铁路信号机具,它和信号机不同的是,它没有防护(进路和区间等)意义。
澳大利亚的研究者表示,除了触觉和视觉,肌肉和关节上的信号接受器也起到了重要作用。
Australian researchers have shown that along with the sense of touch and vision, signalling receptors in the muscles and joints also play a critical role.
微分动作(字母d表示)测量并对过程信号变化率进行反应,调整控制器的输出以达到最小的突出峰。
Derivative action (referred to by the letter d) measures and responds to the rate of change of process signal, and adjusts the output of the controller to minimise overshoot.
接通后,在SVT上的DR(驱动准备)-信号必须是被激活的,它表示驱动器准备变绪。
After switching on, the DR (Drive Ready) -signal on SVT must be active, it indicates the readiness of the inverter.
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