The positron annihilation lifetime spectrum(PALS) method was employed to study the effect of proton radiation on microstructure of the space grade KH-L-Y polysilicone rubber.
用正电子淹没寿命谱方法（PAL S）研究了质子辐照对空间级硅橡胶KH- L - Y微观结构的影响。
For seeking after background spectrum, an iterative technique called gradual annihilation method is used in the module for analysis of differential spectrum.
在微分谱分析模块中采用了迭代技术求全谱本底，称之为逐次淹没法。
It is shown that the positron annihilation technique is a powerful method for investigating the structure of the defects in metal.
可以看出，正电子湮没技术是研究金属微观缺陷结构的有力手段。
It is shown that the positron annihilation technique is a powerful method for investigating the structure of the defects in metal.
可以看出，正电子湮没技术是研究金属微观缺陷结构的有力手段。
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