periodical inspection

基本解釋

Periodical inspection and maintenance of water supply system, supplying pipe, tape and tank, drain pipe.
給水裝置的管線、龍頭、水箱及排水管道的定期檢查和維修。
www.stone-ad.org
Periodical inspection and maintenance of water supply system, supplying pipe , tape and tank, drain pipe .
給水裝置的管線、頭、箱及排水管道的定期檢查和維修。
Maojianshan hydropower station has operated for 40 years safely. Two times of periodical inspection has been carried out, and the dam has assessed as normal one.
毛尖山水電站已安全運行了40年，進行了兩次大壩安全定期檢查工作，大壩被評定為正常壩。