Action Research on Constructing a Welfare Pluralism System for the Elderly with Dementia: Taking the Elderly Health Social Work Service of Beijing X Hospital as an Example Dahkki DU Jin, ZHANG Hongyu, QIAO Yuchen, LIU Yifan, LI Luling

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Formula calculation methods of water content in sweet natural gas and their adaptability analysis Dahkki Zhu Lin, Fan Junming, Zhu Jia, Qin Li, Li Luling

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Decompression and pressure regulation of pure hydrogen and hydrogen-enriched compressed natural gas pipelines Dahkki LI Yuxing, ZHOU Hui, ZHU Jianlu, LIU Cuiwei, LYU Hao, PENG Wei, LU Shu, LI Luling

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