Online Google Dictionary

circulator 中文解釋 wordnet sense Collocation Usage Collins Definition
  1. A circulator is a passive non-reciprocal three- or four-port device, in which microwave or radio frequency power entering any port is transmitted to the next port in rotation (only). Thus, to within a phase-factor, the scattering matrix for an ideal three-port circulator is
  2. A person or thing that causes something to circulate; A local transit system that provides regular service within a closed loop; A passive electronic component with three or more ports, in which the ports can be accessed in such a way that when a signal is fed into any port it is transferred ...
  3. Passive three-port devices that couple light from Port 1 to 2 and Port 2 to 3 and have high isolation in other directions.
  4. is an individual who collects signatures for a voter petition. After completing a page of signatures, the Circulator must sign the document in the presence of a notary public. (See Step 3.)
  5. Term describing the transit function of streetcars, which often circulate people through a district rather than providing point-to-point transportation.
  6. A three-port ferromagnetic passive device used to control the direction of signal flow in an RF circuit.
  7. When limited to a small geographic area or to short-distance trips, local service is often called circulator, feeder, neighborhood, trolley, or shuttle service . ...
  8. This pipe or tube is usually located where the heat absorption is low. It is used to pass steam or water between the upper boiler drums and is also used to apply to the tubes that connect the headers of the horizontal water tube boilers with the drums.