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