汾渭平原

生态环境部称，监测大气主要污染物PM2.5浓度的网格网络将逐步覆盖北京、天津及周边省份的26城市、汾渭平原11城市以及长三角41城市。

The Ministry of Ecology and Environment said a grid network to monitor the density of PM 2.5 , a major pollutant in the atmosphere , will gradually cover Beijing , Tianjin and 26 cities in nearby provinces , and 11 cities on the Fenhe and Weihe river plains , as well as 41 cities on the Yangtze River Delta .

通过本文各指标的研究，进一步认识了汾渭平原全新世土壤的类型、成因与质量演变。

The soil type , cause of soil formation and soil quality changes of Holocene loess-soil sequence have been clearly distinguished .

汾渭平原的城市将从10月开始覆盖，长江三角洲的城市则将从2019年2月开始覆盖。

Cities on the Fenhe and Weihe river plains will be covered starting from October , while those on the Yangtze River Delta will be covered from February 2019 , according to Zhao .

汾渭和华北平原带地震发生的非稳态泊松过程与中长期概率预测

Nonstationary Poisson process of earthquake occurrence and researches of long-and medium-term probabilistic earthquake prediction

在描述事件非稳态泊松过程的基本统计特征及其与稳态泊松过程差别的基础上，将非稳态泊松过程应用在华北地震区汾渭带和华北平原地震带的中长期地震预测研究中。

This paper describes the basic statistical characteristics of non stationary Poisson process of the events and differences between non stationary and stationary Poisson processes , and applies the non stationary Poisson process to study the long and medium term probabilistic earthquake prediction in North China seismic area .