precipitation rain fall meaning in English

降雨量
雨量

The thesis aims at the implement of one subsystem of the systems preventing and reducing the disaster on railway which is applied to monitor the precipitation rain fall
本文致力于研制铁路防灾减灾系统中的一个子系统? ?雨量监控系统的实现。
When the precipitation rain fall is passes the control value , the monitor will alarm , and send the rain data to the management system . the management department can do things to prevent the disaster or reduce the disaster
它通过对雨情的监控和雨情数据的分析，判断是否达到警戒状态，当达到警戒值时，系统将通知相关部门和人员，使其做好防范措施。
Now the information technologies such as computer networks , database are progressing rapidly , and have contributed a lot in all kinds of fields . thus , it is valuable to research how to apply these new technologies to monitor the precipitation rain fall along the railway , to provide a scientific basis for preventing and reducing the disaster
目前，计算机网络、数据库等技术的发展十分迅猛，并对各个行业的发展起到了巨大的推动作用，如何将这些新兴的技术应用于铁路沿线雨情监控，为铁路防灾减灾提供有力的技术支持和科学依据，达到提高其防灾减灾水平，是一个值得的研究课题。