noun
hydraulics
Academic and engineering term for the study of liquids in motion, especially water.
水力学は土木工学の基礎科目の一つです。
Hydraulics is one of the fundamental subjects in civil engineering.
流体力学 is fluid dynamics in general, covering both liquids and gases, while 水力学 focuses specifically on water and other liquids in engineering contexts.
Compound of 水 (water) + 力学 (mechanics, dynamics). A straightforward modern technical term.