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层级制
政府行政系统纵向划分为若干层级,各层级的业务性质和职能基本相同,不同层级的管辖范围自上而下逐级缩小,各层级分别对上一层级负责,从而形成层级节制的金字塔结构。又称科层制。
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biological beach
biological carcinogens
biological catalysis
biological character
biological characteristics
biological characteristics of fish populations
biological chassis
biological chip
biological chromatography
biological classification system in ancient China
biological cleaning
biological coast
biological coating/biomaterials surface engineering
biological column bioleaching test
biological community
biological computation
biological confinement technology
biological contact oxidation process
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biological contamination of foods
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biological control of weeds
biological corridor
biological cybernetics
科学参考收录了854744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。
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