“external radiation protection”的概念、定义、翻译、参考文献-科学参考

单词	external radiation protection
释义	external radiation protection Encyclopedia 医学辐射防护三原则释 external radiation protection外照射防护尽量减少或避免体外放射源发射的电离辐射人体的照射，使所受照射不超过国家规定的剂量限值的措施。
随便看	sum-free set sum frequency sum frequency generation spectroelectrochemistry sum frequency generation vibrational spectroscopy sum function Sumgait sum graph sum ideal Su Min sum index sum insured SUMIS summability summability factor summability field summability integral summability method summability multipliers summability of a series summability property summability theory summability with a weight summable summable basis summable derivative

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