Quantitative information or data is based on quantities obtained using a quantifiable measurement process. In contrast, qualitative information records qualities that are descriptive, subjective or difficult to measure.
European engineers have developed a self-regulating reversible inflow control device (ICD) to maximise oil production and shut off unwanted water and gas from production wells.
EN 
CS
DE
ES
FR
HU
IT
PL
PT
РУ
SK
TR
УК
AR
中文
