英语词汇natural background level怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
?自然基准
... high background level 高本底水平 natural background level 自然基准 allowable background level 容许本底水平 ; 释义容许本底水平 ...

短语

1
Radiation doses to humans may be characterized as low-level if they are comparable to natural background levels.
对人类的放射剂量如果与自然环境辐射水平相比属低水平。
2
It is believed that such a level is of no significance to human health having regard to natural background levels.
令人信服的是，考虑到自然本底值，这样小的放射水平对人体健康是无关紧要的。
3
The results show that the radioactivity level of varied water bod-ies of the city was within normal natural background.
调查结果表明，上海市各类水体中天然放射性核素浓度属正常本底水平。

单词	natural background level
释义	natural background level 简明释义自然基准网络释义 1 ?自然基准 ... high background level 高本底水平 natural background level 自然基准 allowable background level 容许本底水平 ; 释义容许本底水平 ... 短语 1 natural radioactive background level 天然放射性本底双语例句 1 Radiation doses to humans may be characterized as low-level if they are comparable to natural background levels. 对人类的放射剂量如果与自然环境辐射水平相比属低水平。 2 It is believed that such a level is of no significance to human health having regard to natural background levels. 令人信服的是，考虑到自然本底值，这样小的放射水平对人体健康是无关紧要的。 3 The results show that the radioactivity level of varied water bod-ies of the city was within normal natural background. 调查结果表明，上海市各类水体中天然放射性核素浓度属正常本底水平。
随便看	Machault Machaut Machaut, Guillaume de Machava macha wheat mach band Mach band effect Mach buffet Mach-buster machcardiogram MACH CHK mach cone Mach controller mach criterion Mach diamond mach disk mache mache Machead MAC header Machean positivism macheath Machece Machecoul Mache-Einheit