What do A pos and C pos mean?
The # column is the rank of each listed entry for Science China Technological Sciences — rank 1 means this entry is where Science China Technological Sciences has the most articles or citations. A pos and C pos show the reciprocal: the position of Science China Technological Sciences within that entry's own ranked list, by articles and citations respectively. A low value means Science China Technological Sciences is among the most prominent contributors for that entry.