natural background radiation

基本解釋

• 天然本底輻射
• 自然本底輻射

英漢例句

雙語例句

• This is called natural background radiation.
  這稱爲自然環(huán)境輻射。
• The committee said the detected levels of radioactive iodine-131 were below one-hundred-thousandth of natural background radiation and not considered harmful.
  委員會稱此次檢測到的碘-131輻射量小於天然本底輻射劑量的十萬分之一，不會對公衆(zhòng)造成傷害。
• For most people more than half of their natural background radiation dose comes from radon, a radioactive gas that can accumulate in homes, schools and workplaces.
  對大多數(shù)人來說，他們自然環(huán)境輻射劑量的一半以上來自氡 — 一種可聚集在家庭、學校和工作場所的放射性氣躰。
  www.pdcdc.sh.cn

權(quán)威例句

• Dr. GERBER: It's approximately four times the natural radiation dose that we all receive annually in the Unites States, as a result from background radiation due to radon and other materials.
  NPR: Study: Heart CT Scans May Pose Risk

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詞組短語

短語

• natural l background radiation 本底輻射
• natural environment background radiation 天然環(huán)境本底輻射

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