разница между

• The difference in tension between the tight and loose sides of a flat belt equals ...

• The difference in the magnitude of the five coefficients ...

• There is a significant disparity (or difference, or divergence, or discrepancy) between the grades of ...

• Wide variations in life between circuits that have different functions ...

• The distinction between heterogeneous and homogeneous mixtures is an arbitrary one.

• As yet nobody has been able to produce direct evidence of any structural difference among cones.