“security clearance”的概念、定义、翻译、参考文献-科学参考

单词	security clearance
释义	security clearance [si`kyu̇r·ǝd·ē ´klir·ǝns] ^ORDNANCE A clearance given to a person to permit access to classified material, equipment, or information up to and including a given classification, provided the person can establish a need-to- know.
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科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。