periodical inspection

基本解释

Periodical inspection and maintenance of water supply system, supplying pipe, tape and tank, drain pipe.
给水装置的管线、龙头、水箱及排水管道的定期检查和维修。
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Periodical inspection and maintenance of 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。
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.
毛尖山水电站已安全运行了40年，进行了两次大坝安全定期检查工作，大坝被评定为正常坝。