It isinvolve following several aspects:1: Relations between of ESR signal intensity and exposure dose.2: ESR signal stability after exposure,3: Parameter choice for measuring ESR signal.4: Mean lifetime of ESR paramagnetic center.5: Exposure dose saturated situation of ESR paramagnetic enter.
3、ESR信号测量参数的选择。 4、ESR顺磁中心的平均寿命。
参考来源 - 方解石脉ESR信号特征的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Generally, its mean lifetime is about 2000 hours.
一般来看，它的平均寿命为2000个小时左右。
The relationship between positron mean lifetime and grain size, based on two state trapping model, has been developed, and the saturation trapping at grain boundaries has been predicated.
从两态捕获模型出发，导出了正电子平均寿命与晶粒大小之间的关系，并且预言了晶界正电子饱和捕获效应的存在。
We have to decide on how long a life of the reactor core we want and by lifetime we mean the time from when we start the reactor to the time that we need to re-fuel.
我们需要决定反应堆核心的一期有多长，寿命，我们指的是，我们开始反应堆的时间到，我们需要换料的时间之间。
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