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。
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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(yùn)行了40年，進(jìn)行了兩次大壩安全定期檢查工作，大壩被評(píng)定為正常壩。