local junction meaning in Chinese
市内中继线, 到长途局的中继线
Examples
- It can realize the automatic measurement rainfall and sequence record history datum on time with the rtc ; the system can be taken notes history datum more than 1 month at least ; communication interface supported by the serial communication interface can link with the pc ' s rs232 , telephone network and mobile telephone network ; it can persist in working with backup power more than 1 day when the local junction circuit stops providing electricity
它可以实现自动测量降雨量；具备实时时钟，按时间顺序记录历史资料，系统至少能够记录1月以上的历史资料；具备串行通讯接口，通讯接口应支持如下功能：与pc计算机的rs232接口、与电话网连接、与移动通讯网连接；具有后备电源，在市电断电时能坚持工作1天以上。 - As to the video signal , alarm signal , control signal , are all weak electricity signal , exceedingly easily be subjected to the jam , in case the power supply system does not steady , wave propag ation is greatly , the harmonic content of power source overtops , the veins wave factors are great unduly , and even power source equipment breakdown , outputting abnormal , will be about to affect the video signal image effect , and dependability cuts downs to the security and alarming system . we adopt fast fu lye ' s mutation rule - fft alternatives , by the way of carrying fft alternatives to the local junction circuit , regulated power supply , ups ' s power source , and switch power source , thereby diagnose every degree harmonious wave content of power souse , and abnormal coefficient , compared to the normal working situation . thereby diagnose out the working condition of the regulated power supply , ups ' s power source , and switch power source
如果有供电系统不稳定、波动大，电源的谐波含量过高，纹波系数过大，乃至电源设备损坏、输出异常等情况出现，将会严重影响视频信号的图像效果，大大降低防盗系统的稳定性和可靠性，我们采用快速傅利叶变换原理，即fft变换，通过对市电、稳压电源、 ups电源、开关电源等的电压信号进行fft变换，从而得出信号中各次谐波的含量及信号畸变系数，并将其与正常工况下的参数进行对比，从而进一步诊断出稳压电源、 ups电源、开关电源等设备的运行状况；组成监控系统的设备长期处于工作状态，往往由于设备散热条件不好、设备老化故障等原因导致设备表面温度过高，从而影响设备的正常运行，降低设备的使用寿命。