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reference operating condition наголоси
метр.	нормальные условия эксплуатации (CRINKUM-CRANKUM)
Англійський тезаурус
reference operating condition
метр.	The conditions under which the equipment was tested. Reference operating conditions are stipulated operating conditions for testing measurement equipment or the comparison of measured values. They are usually fixed reference values for the influence quantities which are acting upon the measurement equipment