河北北方学院学报
Journal of Hebei North University
河北北方学院学报自然科学版
Journal of Hebei North University natural science
河北北方学院应用化学研究所
Application Chemistry Institute of Hebei Northern College
渭北岩溶水
karst water of northern Weihe
粤北岩溶山区
the north karst mountain area of Guangdong
north karst mountain area of Guangdong
岩溶方解石
calcite for karstification
碳酸盐岩岩溶
Carbonate rock weathering
碳酸盐岩岩溶储层
carbonate karst reservoir
碳酸盐岩岩溶缝洞型油藏
Carbonate rock rorrosion rracture and role accumulation
土壤-灰岩岩溶系统
Soil-limestone karst system
北北东向负航磁异常带
N-N-E strike strip of negative anomaly
北北西
Blackfaced Highland sheep
body fixing apparatus
north northwest {= NNW
NNW