noun, noun which may take the genitive case particle 'no'
constant pressure
Technical term used in physics, engineering, and related fields to describe a state or process where pressure remains unchanged.
この実験は定圧条件下で行われた。
This experiment was conducted under constant pressure conditions.
定圧弁はシステム内の圧力を一定に保つ。
A constant pressure valve keeps the pressure in the system constant.