• After liberation, the high-temperature internal kinetic energy must be transferred as heat to a suitable working substance ( or working material , or working medium , or working fluid ) such as air, water , or steam.
РАБОЧЕЕ ТЕЛО
Русско-английский перевод РАБОЧЕЕ ТЕЛО
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012