I

• In the field (or area) of organic chemistry it is often helpful to ...

• The latest development in this line is ...

II

• Not much has been done in the way of actually assessing a technology.

III

• The flux is uniform over the whole area (or region).

I

см. тж. в данной области; в области; во всей области; относиться к области; сфера

• This is an area of spectroscopy in which ...

• Developmental work is being carried out in two new areas (or fields, or spheres).

• This skill is necessary to every department of life.

• To extend this linear concept into the domain of nonlinear systems, ...

• In several domains of science ...

• Thus we enter into the territory of metaphysics.

• New aspects of multiple coloumb excitation are among the realms that can be advantageously explored.

II

см. тж. в диапазоне; в интервале

• The flux is uniform over the whole area.

• To supply power in remote locations (or regions, or areas), such as the Arctic, ...

• Our compasses today depend upon the same forces.