• The identities of the compounds are not known in advance .
• The properties of these materials can be specified beforehand .
• The identities of the compounds are not known in advance .
• The properties of these materials can be specified beforehand .
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012