criticality excursion造句

• On 15 October 1958, the institute was the site of a fatal criticality excursion in its heavy water-moderated research reactor.
• On 3 February 1954 and 12 February 1957, accidental criticality excursions occurred causing damage to the device, but fortunately only insignificant exposures to personnel.
• A meltdown may be caused by a loss of coolant, loss of coolant pressure, or low coolant flow rate or be the result of a criticality excursion in which the reactor is operated at a power level that exceeds its design limits.
• It's difficult to find criticality excursion in a sentence. 用criticality excursion造句挺難的