QQ客服 官方微博 反馈留言

浏览/检索结果: 共3条，第1-3条 帮助 限定条件 发表日期：2021     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Factors influencing improvements in air quality in Guanzhong cities of China, and variations therein for 2014-2020 期刊论文 URBAN CLIMATE, 2021, 卷号: 38, 页码: 13 作者:  Zhao, Huiyizhe;  Niu, Zhenchuan;  Feng, Xue 收藏  |  浏览/下载：61/0  |  提交时间：2021/12/06 Air quality improvement  COVID-19 pandemic  Meteorological factors  Emission reductions  Cities in Guanzhong   Mutation test and multiple-wavelet coherence of PM2.5 concentration in Guiyang, China 期刊论文 AIR QUALITY ATMOSPHERE AND HEALTH, 2021, 页码: 12 作者:  Li, Song;  Liu, Nanjian;  Tang, Linfeng;  Zhang, Fengtai;  Liu, Jinhuan 收藏  |  浏览/下载：92/0  |  提交时间：2021/05/21 Air quality  PM2 .(5)  Environmental factors  BGSA  Multiple-wavelet coherence   Accelerated damage and deterioration mechanism of concrete in saline soil area and reliability analysis based on Wiener process 期刊论文 Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology, 2021, 卷号: 50, 期号: 2, 页码: 265-272 作者:  Lu, Chenggong;  Qiao, Hongxia;  Wei, Zhiqiang;  Li, Kan;  Fu, Yong 收藏  |  浏览/下载：14/0  |  提交时间：2022/02/17 Compressive strength  Concretes  Cracks  Crystals  Deterioration  Durability  Dynamics  Elastic moduli  Erosion  Expansion  Freezing  Petroleum reservoir evaluation  Quality control  Random processes  Soils  Stochastic systems  Thawing  Underground corrosion  Degree of reliability  Deterioration mechanism  Dynamic elastic moduli  Evaluation parameters  Macroscopic evaluation indexes  Microscopic evaluation  Multiple damage factors  Reliability degradation