Perhaps Be doing music band, public official, read marine hydraulic engineering.
也许在做乐队，公务员，读水利工程。
The study of hydraulic grade line is an important project in navigation engineering.
在航道的整治设计中，对水面线的研究一直是一个重要课题。
Hydraulic technology is one basic course of the Mechanical Engineering.
液压传动技术是机械类专业的一门基础课程。
Hydraulic technology is one basic course of the Mechanical Engineering.
液压传动技术是机械类专业的一门基础课程。
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