hydraulic
Definitions
Operated or moved by the pressure of a liquid, especially water or oil
液压的，水力的（靠液体压力驱动的）
Root Breakdown
Root-derivedFrom Greek hydraulis, a 'water-pipe' organ (hydōr 'water' + aulos 'pipe'). The idea of a liquid travelling through pipes under pressure carried over into machinery: hydraulic systems use pressurised fluid to push pistons, lift cars, and stop trucks.
Root hydr still carries 9 more wordsWhy It Means This
Learners are often surprised that 'hydraulic' machines usually run on oil, not water. The root just signals that some liquid is doing the pushing — pressure in a fluid transmits force from one end of a sealed system to the other, whether that fluid is water (the original) or oil (modern brakes and lifts).
Common Collocations
- 1.hydraulic system液压系统
- 2.hydraulic pressure液压
- 3.hydraulic press液压机
- 4.hydraulic brakes液压刹车
Example Sentences
- 1.
The excavator's arm is moved by powerful hydraulic cylinders.
- 2.
A small leak in the hydraulic system can disable the brakes.
- 3.
Engineers use hydraulic presses to shape sheets of metal.