Open AccessUrban Air Pollution Research and Its Cause Analysis Based on Gray Theory
Author(s) -
维强 王
Publication year - 2018
Publication title -
tong ji xue yu ying yong
Language(s) - English
Resource type - Journals
eISSN - 2325-226X
pISSN - 2325-2251
DOI - 10.12677/sa.2018.72019
Subject(s) - gray (unit) , pollution , environmental science , air pollution , meteorology , geography , medicine , ecology , radiology , biology , chemistry , organic chemistry