“environmental radioactivity level investigation”的概念、定义、翻译、参考文献-科学参考

单词	environmental radioactivity level investigation
释义	environmental radioactivity level investigation Encyclopedia 工学辐射环境调查释 environmental radioactivity level investigation辐射环境调查为某种目的，对指定范围内的放射性水平进行测量分析和为评价目的对其他相关资料进行收集的活动。又称环境放射性水平调查、环境放射性背景调查。
随便看	approximate value by excess approximate zero approximating approximating equation approximating function approximating operator approximating proper mapping approximating rational curves and surfaces by polynomials approximating rational curves by polynomials approximating rational surfaces by polynomials approximating sequence approximating set approximation approximation accuracy approximation algorithm approximation boundary condition approximation by continued approximation by continued fractions approximation by convex sets approximation by defect approximation by diffusion approximation by excess approximation by function of complex variable approximation by interpolation approximation by least squares

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