Specialised

Logic and mathematics are nothing but specialised linguistic structures.

A server is a specialised computer.

Second, a railway research department represents a qualified and specialised consultancy service, to provide the basis for well-informed high-level decisions regarding new designs or possible lines of development. [...] Finally, a research department is desirable to carry out the more specialised trials and testing of manufacturers' equipment prior to its acceptance by the operating personnel.

"Railways have to bear the very high fixed costs associated with the provision and maintenance of a specialised route system for their own exclusive use. [...]"

Specialised long-reach excavators with a clamshell grab then reach though the openings to lift the spoil to the surface, which is then deposited in articulated dump trucks (ADTs).