吉林石化公司
jilin petrochemical company
中国石油吉林石化公司研究院
The Research Institute of Jilin Petrochemical Company of PetroChina
石漠化地区造林树种
trees for rocky desertification area
石漠化－森林过渡环境
rock desertification-forest environment
磷酸盐化化石组合
phosphatized fossil assemblage
无化石石灰岩
non-fossiliferous limestone
nonfossiliferous limestone