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文物保护单位“四有”
释义
文物保护单位“四有”
Encyclopedia
历史学
文物保护单位管理
释
historical and cultural sites under government protection “four haves”
文物保护单位“四有”
中国对文物保护单位进行科学管理的一项基础工作。
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acoustic radiation impedance
acoustic reactance
acoustic reflection law
acoustic reflectivity
acoustic refraction law
acoustic refractive index
acoustic remote sensing
Acoustic Research Centre
acoustic resistance
acoustic resonance
acoustic resonance, sound resonance
acoustic resonator
acoustic reverberation room
acoustics
acoustics assessment technology of fisheries
acoustics characteristic measuring instrument
acoustic sensor
acoustic shell
acoustic shield
acoustic shock
acoustic signal filtering
acoustic single negative material
acoustic single-negative material
acoustics of speech communication
acoustic source
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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更新时间:2026/10/27 0:19:30