color-difference evaluation
spatial difference evaluation
vacuum pressure difference investment casting
investment evaluation index
safety investment evaluation
closed difference of height difference
difference in difference
difference in difference (DD) method
Difference-in-difference
log mean temperature difference; logarithmic mean temperature difference
logarithmic mean temperature difference; log mean temperature difference
temperature difference; logarithmic mean; log mean temperature difference
Actual investment Virtual investment Unity Disparity Harmony
Agriculture investment New guarantee system State fund supporting agriculture Credit fund Investment from the peasants
Surplus reserve-reture investment by investment
evaluation of hydrocarbon resources evaluation
evaluation of security evaluation
+ expression difference