Foreign Titles Parallel title
that is contained in subfield $b of field 245. Parallel title is a title
in another language for which access or an added entry is desired. When
one or more parallel titles have been recorded in field 245, each
parallel title is also recorded in a separate field 246. 

Example:

245
00 $a Japan
report = $b Nihon.
246
11 $a Nihon