см. тж. на ... действует ; не ~
• The pickup acts ( or functions , or operates ) as a miniature generator.
• The acoustic mechanisms operate ( or are operative ) whenever ...
• Diverse mechanisms may be at work in different places on the satellite.
• This suggests that such forces are in operation .
• Oxygen operates as an electron acceptor.
• Both changes operate in the same direction.
• Here again some common mechanism is operating .
• This agreement indicates that no other large force is operative .