95 is used by the Chinese Shenzhou spacecraft. The name of the system is Russian in origin, how to attach pdf pages together is an acronym, АПАС, in the Cyrillic alphabet, from the Russian, Андрогинно-периферийный агрегат стыковки.
The English acronym was designed to be just the same letters but in the Latin alphabet, for which the first two words are direct counterparts of those in the original. The third word in Russian comes from the German aggregat, meaning “complicated mechanism”, and the last means “docking”. The last two words in the English name were picked to begin with the same equivalent letters as in the Russian name. In each docking there is an active and a passive side, but both sides can fulfill either role.
There are three basic variations of the APAS system. There were differences between the American and Soviet version of the docking mechanism, but they were still mechanically compatible. Docking Mechanism and the International Docking System. NASA press packet for ASTP.
Unlike previous docking systems, either APAS-75 unit could assume the active or passive role as required. The ring holding the guides shifted to align the active unit latches with the passive unit catches. The active unit then retracted to bring the docking collars together. Guides and sockets in the docking collars completed alignment.