At lower burnup level, the thermal stress is the principal factor affecting the safety of the rod.

在燃耗初期，裂变热导致的热应力场是影响燃料棒安全性的主要因素。

One of the way to enhance the economic benefit for nuclear power plant is to deepen burnup and extend reload cycle.

加深燃耗和延长换料周期是提高核电站经济效益的手段之一。

This paper introduced the general situation of the reactivity measurement on an experimental PWR under high burnup condition.

介绍了在实验性PWR堆上完成的深燃耗条件下测量反应性概况。

The present invention provides a burnup saving type engine oil with superior low vaporability and low temperature viscosity property.

本发明提供低蒸发性良好且低温粘度特性良好的省燃耗型机油。

Because of increasing burnup of power reactor, more advanced technologies should be applied in the reprocessing of spent nuclear fuel.

由于核电站动力堆乏燃料的燃耗深，对乏燃料后处理工艺技术提出了更高要求。