hydraulic
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hydraulic
Relating to technology that uses movement and power transmission through liquids, usually oil, under pressure. Many machines and systems, such as brakes, presses, or excavator arms, operate hydraulically.
Die schwere Hebebühne wird hydraulisch angetrieben.
The heavy lifting platform is hydraulically powered.
The root 'Hydr-' comes from Greek and means 'water'. Although hydraulics usually uses oil, the origin helps connect the word with liquids.
Viele technische Begriffe wie Hydrologie oder Dehydrierung enthalten den Stamm „Hydr-“.
Many technical terms such as hydrology or dehydration contain the root 'Hydr-'.
'Hydraulisch' (hydraulic) is a technical term from engineering, physics, and mechanical engineering. In everyday life, you usually hear it only when the way certain devices work is being discussed.
Der Ingenieur erklärte uns das hydraulische System der Maschine.
The engineer explained the hydraulic system of the machine to us.
The word is very often used as an adverb to describe how something works or is powered. It then appears with verbs like 'arbeiten' (to work/operate), 'funktionieren' (to function), or 'steuern' (to control).
Der Arm des Baggers bewegt sich hydraulisch.
The arm of the excavator moves hydraulically.
Common combinations are 'hydraulische Bremse' (hydraulic brake), 'hydraulische Presse' (hydraulic press), 'hydraulischer Aufzug' (hydraulic elevator), or 'hydraulisches System' (hydraulic system). It always describes devices that work with fluid pressure.
Moderne Autos haben eine hydraulische Bremsanlage.
Modern cars have a hydraulic braking system.
electric
'elektrisch' and 'hydraulisch' both describe how a machine or system works. You use 'elektrisch' when electricity is the important energy source. You use 'hydraulisch' when liquid under pressure transmits force, for example in brakes or excavators. The words can be confused because both often occur with technical devices. The simple guide is: electricity is 'elektrisch', pressurized fluid is 'hydraulisch'.
Der Bagger hebt den schweren Arm mit einem hydraulischen System.
The excavator lifts the heavy arm with a hydraulic system.
Nach dem Umzug kauft Lena einen elektrischen Schrauber.
After the move, Lena buys an electric screwdriver.