• The gas and the liquid are brought together ( or in contact ) in a suitable contacting apparatus.
• When two metals are placed ( or brought ) in ( to ) contact , electrons pass from one to the other.
• The gas and the liquid are brought together ( or in contact ) in a suitable contacting apparatus.
• When two metals are placed ( or brought ) in ( to ) contact , electrons pass from one to the other.
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012