в основном

. большинство; главным образом; по существу

•

The earth's atmosphere is largely composed of nitrogen and oxygen.

•

Concretions are composed (pre)dominantly of calcium carbonate.

•

This chapter principally compares the characteristics of ...

•

Nitric acid is significantly natural in its occurrence.

•

Most of the theory is basically the same as that of sound waves in air.

•

Basically, these variations result from ...

•

Bone ash gives essentially the same counting efficiency as ...

•

The instrument consists essentially of a prism, a pan of mercury, ...

•

For the most (or major, or greater) part, the subjects are covered adequately.

•

The shield has been designed for the most part from common materials.

•

The region for linear operation will be determined fundamentally by the maximum width of ...

•

The heading remains much as in the previous version.

•

Axial transport in unpacked tubes is predominantly (or principally, or chiefly, or mainly, or in the main) by conversion.

•

The article is primarily concerned with ...

•

Some types of sedimentary rocks are substantially of the same composition as clay.

•

The corpuscular radiation from the Sun, mostly electrons and protons, is an efficient source of ...

•

This fuel resists combustion knock principally because it has ...

•

Typically the canopy is closed and the forest is dark, although ...

•

The colour force is overwhelmingly employed in the service sector.

•

When the process is substantially complete, ...

* * *

В основном -- basically, mainly, mostly, primarily, chiefly; much; in the main

 The test facility consisted basically of a compressed air supply, an air flow metering section, and interchangeable plenum/jet plate assemblies.

 The differences that appear are mainly due to variations in the pressure.

 Property changes result mostly from microstructural transformation.

 Two values of X from [...] are presented primarily to indicate how much results change with X.

 This is chiefly because, in this region, pressure-relieving devices tend to be less reliable.

 In the main, the available information on the jets is restricted to normal impingement.