основная масса

I

The effect was related to the difference in surface tension between the bulk and the surface of the liquid.

II

The overwhelming bulk of the phenols, cresols, and xylenols is obtained from coal tar.

The main body of ground water lies at deeper levels.

The bulk of the heavy nuclei are formed by the fusion of ...

Источник: Русско-английский научно-технический словарь на Gufo.me