TY - Journal of Yangtze River Scientific Research Institute A1 - CONG Hui, ZHOU Wei-bo, SONG Yang, LAI Guang-dong, BAI Jie-fang T1 - Spatial and Temporal Variations of Precipitation in Big Xi'an Region During 1970-2013 Y1 - 2017-08-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 18 EP - 23 VL - 34 IS - 8 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20160730 ER -