s s c i qi kan you na xie
s s c i you na xie qi kan
s t e shi na ge qi kan
石油 shi you na xie qi kan
t p shi na lei qi kan
t u qi kan you na xie
冶金 ye jin na xie qi kan
you na xie qi kan wang
集刊 一稿多投 yi gao duo tou yi pian qi kan yi pian ji kan
核心水平 4 pian s c i 2 pian he xin qi kan shi me shui ping
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