Research laboratory and Test bed

Research laboratory noun - A workplace for the conduct of scientific research.

Test bed and research laboratory are semantically related. In some cases you can use "Test bed" instead a noun phrase "Research laboratory".

Test bed noun - A place equipped with instruments for testing (e.g. engines or machinery or computer programs etc.) under working conditions.

Research laboratory and test bed are semantically related. You can use "Research laboratory" instead a noun phrase "Test bed".