• The valences of the carbon atoms not involved in ring formation are situated ...
• Species participating ( or involved ) in a chemical change ...
• The valences of the carbon atoms not involved in ring formation are situated ...
• Species participating ( or involved ) in a chemical change ...
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012