all-relay automatic system 全继电器自动控制系统
relay automatic telephone system 继电器式自动电话系统 ; 继电器式自动电话交换制
all relay automatic telephone system 全继电器制自动电话系统
all-relay semi-automatic block system 继电半自动闭塞
automatic relay global observation system 全球观测自动中继系统
semi-automatic relay system 半自动继电器系统
The automatic test system which can measure action time and release time of the relay is designed.
设计了测量继电器动作时间与释放时间的自动测试系统。
An automatic calibrating system is successfully developed to check the performance indexes of specific relay protection testing equipment.
研制了一种用于检定某型号继电保护测试设备性能指标是否满足设计要求的自动检定系统。
Taking the CW6140-general machine tools as an example, the analysis and design methods of reconstructing the relay control into automatic control system by PLC were introduced.
以常用的CW6140型普通机床为例，介绍利用P LC把继电控制改造为自动控制的分析与设计方法。
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