real open system
A computing term referring to a system that is genuinely open, as opposed to merely claiming openness. Used in technical contexts.
This project aims to build a real open system.
開放型システム is a general 'open system', while 実開放型システム emphasizes that it is a truly or genuinely open system, not just in name.
Compound of 実 (じつ, 'real') + 開放型 (かいほうがた, 'open type') + システム (system). A technical term likely coined in computing contexts.