• This "protective O 3 shell" could be permanently ( or irreparably ) damaged .
• If a blade becomes damaged beyond repair , ...
• This "protective O 3 shell" could be permanently ( or irreparably ) damaged .
• If a blade becomes damaged beyond repair , ...
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012