• The air is admitted ( in ) to the shell by opening a shooting valve.
• Some hot condensate is let into the purifier.
• The air is admitted ( in ) to the shell by opening a shooting valve.
• Some hot condensate is let into the purifier.
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012