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道路施工区域标识
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道路施工区域标识
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道路施工区域标识
为降低公路施工养护事故率,维护正常的交通流运行,保护公路施工养护人员及公路使用者的安全,必须根据不同的公路等级和施工区特点设置的安全警示和相关作业。通常设在道路施工、养护等路段前适当位置,一般为长方形,蓝底白字,图案部分为黄底黑图案。
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biological residue monitoring
Biological Resource Center of Institute Pasteur
biological resources in China
biological response modifiers
biological rhythm
biological rhythm alteration induced by space radiation
biological rhythms
biological risk analysis for aquatic animal health
biological robot / bio-robot / robo-animal / cyborg
biological sample storage technology
biological sand fixation
biological screening technology
biological sedimentation
biological sensitivity
biological sensory
biological sequence measurement
biological sex difference
biological signal processing
Biological Societies of China
biological soil crusts
biological sonar system
biological space
biological species
biological specimen
biological specimen museum
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