в жёстких условиях
• In (or Under) drastic (or arduous, or violent, or severe) conditions ...
• This alloy has been used for severe service at high temperatures.
Источник:
Русско-английский научно-технический словарь
на Gufo.me
• In (or Under) drastic (or arduous, or violent, or severe) conditions ...
• This alloy has been used for severe service at high temperatures.