• Only a small percentage of all known metals have been investigated along these lines .
• The unit is designed on this principle .
• Only a small percentage of all known metals have been investigated along these lines .
• The unit is designed on this principle .
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012