Hard work ethic in advanced technology (2,4)
I believe the answer is:
hi-tech
'advanced technology' is the definition.
(I've seen this before)
'hard work ethic in' is the wordplay.
'hard' becomes 'h' (abbreviation used in pencil classifications).
'work' indicates an anagram.
'in' means one lot of letters goes inside another.
'ethic' is an anagram of 'itech'.
'h' put inside 'itech' is 'HI-TECH'.
(Other definitions for hi-tech that I've seen before include "Using the latest science" , "Style of interior design using features of industrial equipment" , "Using modern construction" , "latest devices" , "Involving the latest electronic gadgetry" .)