Complex sentence: In Europe, the suffix R can signify rack (0-6-0RT) or reversible (0-6-0TR), the latter case being the "Bi-cabine" locomotives used in France.
Split into simpler sentences: In Europe, the suffix R could mean rack (0-6-0RT) or it could mean reversible (0-6-0TR). The latter case being the "Bi-cabine" locomotives used in France.