“radioactive standard”的概念、定义、翻译、参考文献-科学参考

单词	radioactive standard
释义	radioactive standard [¦rād·ē·ō`ak·tiv `stan·dǝrd] ^NUCLEONICS A sample of radioactive material which contains a known number and type of radioactive atoms at some definite time; used to calibrate radiation measuring instruments.
随便看	perikaryon Perilampidae perilla oil perilymph perimagmatic perimeter perimeter blasting perimetrium perimysium perineum perineural perineural fibroblastoma perineural fibroma periocular period periodate period doubling periodic periodic acid periodic antenna periodic continued fraction periodic current periodic damping periodic disease periodic duty

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