hydraulic mean radius水力平均半径
hydraulic c radius水力半径
mean hydraulic radius平均水力半径;翻译;平均水力半径英语
hydraulic hitch mean radius水力平均半径
caving hydraulic radius崩落水力半径
average hydraulic radius平均水力半径
constant hydraulic radius channel等水力半径渠道
the hydraulic radius水力半径