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primary standards of national defense
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primary standards of national defense
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工学
(计量)
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primary standards of national defense
国防最高计量标准
在国防军工系统中具有最高计量特性,由国家国防科技工业计量主管部门考核合格并授权在国防军工系统中进行量值传递的测量标准。
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