Explanation: For the purposes of this section (a) "foreign currency" shall have the meaning assigned to it in the Foreign Exchange Regulation Act, 1973 (46 of 1973): (b) "foreign employer" means, (i) the Government of a foreign State; or (ii) a foreign enterprise ' or (iii) any association or body established outside India; (c) "technician" means a person having specialised knowledge and experience in (i) constructional or manufacturing operations or mining or the generation or distribution of electricity or any other form of power; or (ii) agriculture, animal husbandry, dairy farming, deep sea fishing or ship building; or (iii) public administration or industrial or business management; or (iv) accountancy; or (v) any field of natural or applied science including medical science or social science; or (vi) any other field which the Board may prescribe in this behalf, who is employed in a capacity in which such specialised knowledge and experience are actually utilised.