... 合成单位历线 Synthetic unit hydrograph 定期保养制度 System of periodical maintenance 交替方式 System，alternate ...
双语例句
1
Periodical inspection and maintenanceof water supply system, supplying pipe, tape and tank, drain pipe.
给水装置的管线、头、箱及排水管道的定期检查和维修。
2
With rapid development of power system, the traditional periodicalmaintenance can not meet the need of secure operation of high voltage equipments for power transmission and transformation.