при нормальных условиях
• The instrument will indicate the altitude of the aircraft above sea level if standard (or normal) conditions prevail.
• The properties of the mantle at standard conditions ...
Русско-английский научно-технический словарь• The instrument will indicate the altitude of the aircraft above sea level if standard (or normal) conditions prevail.
• The properties of the mantle at standard conditions ...
Русско-английский научно-технический словарь