The usually visible or measurable efficiency of the volume of a substance, often used in engineering contexts.

आमतौर पर दिखाई देने वाली या मापने योग्य दक्षता

English Usage: The apparent volumetric efficiency of the engine was calculated to be 80%.

Hindi Usage: इंजन की स्पष्ट घनात्मक दक्षता को 80% मापा गया।