1) background ratio
本底比(本底和被测效应之比)
2) Background Efficiency Ratio)
本底效率比
3) peak-to-background ratio
峰底本底比
4) base affection
本底效应
1.
Through the comparison of the differences of the base smoke density, induced by the different levels of particulate pollution in atmosphere in different areas, it was found that the difference in base affection is quite little.
针对大气污染引起的悬浮颗粒 ,尤其是可吸入颗粒 (PM10 )对感烟火灾探测器产生的本底效应进行了分析 ,并以离子型感烟探测器为例对本底值进行计算 ,通过比较 ,显示不同程度的大气颗粒物污染对感烟探测器本底影响的差异极小 ,排除了感烟探测器在悬浮颗粒污染严重地区发生灵敏度和误报率升高的可能。
5) Lesion/Background ratios
靶/本底比值
6) baseline vegetation
本底植被
1.
On baseline vegetation in Northern China;
中国北方地区的本底植被
2.
Based on the census of baseline vegetation of the coastal water of Sha River and Li River in Luohe urban area,the greenbelt type,the prent vegetation,the species composition and the community structure were analyzed.
通过对漯河市城区段沙河、澧河沿岸本底植被普查,分析了城区段沙河、澧河沿岸的绿地类型、植被现状、物种组成和群落结构。
补充资料：本底辐射(radiationbackground)
【本底辐射】(radiationbackground)指来自欲进行探测或测量的放射源以外任何天然或人工放射源的辐射。它们来自宇宙射线、周围环境中放射性影响和仪器本身（如铅室）的放射性。随环境改变而有明显变化。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条