заключаться в

см. тж. в этом заключается; состоять в

• The essential difference between an incompressible and a compressible fluid is in the speed of sound.

• The key to the structure lay with the arrangement of the heterocyclic amines.

• This operation consists in heating the material to 50°C above ...

• The chief advantage of the new device lies in its versatility.

• The answer resides in the fact that ...

• The greatest value of the periodic table resides in its ...

• Another series of tests involved drawing of hard steel wire.