hydraulic
adj
1 of water moving through pipes 通過水管流動之水的.
2 operated by the movement of liquid 用水力驅動的
a hydraulic lift 液壓升降機
hydraulic brakes 液壓制動器
a hydraulic engineer, ie one concerned with the use of water in this way 水利工程師.
3 hardening under water 水硬的; 在水中凝固的
hydraulic cement 水硬水泥.