Русско-английский научно-технический словарь
обведённый кружком
• Special taps are to be marked with the letter 5 enclosed in a circle (or with a circled letter S).• Letters within circles ...
Русско-английский научно-технический словарь
• Special taps are to be marked with the letter 5 enclosed in a circle (or with a circled letter S).• Letters within circles ...