Hangzhou high-rise residential elevator updates and maintenance mechanism research
Xu Ji-li;Jiang Bo-yao;Shang Ling-ying;Engineering Management;Zhejiang Universit of Fianance&Economics;Electronic banking department;Zhejiang Rural Credit Cooperativesunion;Engineering Department;Yiwu Communications Investment Group Co.;Ltd;General Office;The Second Construction Co.Ltd of China Construction Third Engineering Bureau;
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