Online Google Dictionary

ballast 中文解釋 wordnet sense Collocation Usage Collins Definition
Verb
/ˈbaləst/,
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ballasts, plural;
  1. Give stability to (a ship) by putting a heavy substance in its bilge
    • - the vessel has been ballasted to give the necessary floating stability
  2. Form (the bed of a railroad line or road) with gravel or coarse stone

Noun
  1. Heavy material, such as gravel, sand, iron, or lead, placed low in a vessel to improve its stability

  2. A substance of this type carried in an airship or on a hot-air balloon to stabilize it, and jettisoned when greater altitude is required

  3. Something that gives stability or substance
    • - the film is an entertaining comedy with some serious ideas thrown in for ballast
  4. Gravel or coarse stone used to form the bed of a railroad track or road

  5. A mixture of coarse and fine aggregate for making concrete

  6. A passive component used in an electric circuit to moderate changes in current

  1. any heavy material used to stabilize a ship or airship
  2. make steady with a ballast
  3. coarse gravel laid to form a bed for streets and railroads
  4. an attribute that tends to give stability in character and morals; something that steadies the mind or feelings
  5. ballast resistor: a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
  6. an electrical device for starting and regulating fluorescent and discharge lamps
  7. Ballast was a punk band formed in Vancouver, Canada and based out of Montreal, Canada.
  8. Ballast is a village in the Netherlands and it is part of the Coevorden municipality in Drenthe. Its elevation is 9 meters (32 feet).
  9. An electrical ballast (sometimes called control gear) is a device intended to limit the amount of current in an electric circuit.
  10. Ballast is a 2008 film directed by Lance Hammer. It competed in the Dramatic Competition at the 2008 Sundance Film Festival, where it won the awards for Best Director and Best Cinematography. The film received 6 nominations in the 2009 Film Independent Spirit Awards.
  11. Ballast is used in sailboats to provide moment to resist the lateral forces on the sail. Insufficiently ballasted boats will tend to tip, or heel, excessively in high winds. Too much heel may result in the boat capsizing. ...
  12. Heavy material that is placed in the hold of a ship (or in the gondola of a balloon), to provide stability; Anything that steadies emotion or the mind; Coarse gravel or similar material laid to form a bed for roads or railroads; A material, such as aggregate or precast concrete pavers, which ...
  13. (Ballasts) Power supplies for fluorescent tubes.
  14. Ballasts, capacitors, and ignitors are warranted by the ballast manufacturers. Please check the manufacturer's published warranty for the ballast in question. ...
  15. A transformer that steps up the voltage in a florescent lamp.
  16. A fluorescent light fixture component, the primary function of which is to provide sufficient starting voltage for the lamp. A ballast may also serve to heat the fluorescent lamp electrodes and control the amount of power to the lamp once it is operating.
  17. An electrical device required to operate fluorescent lamps.
  18. A circuit used to condition and stabilize an electric current, for example, in a fluorescent light.
  19. a weight carried aboard a lighter-than-air vehicle to offset the buoyancy of its lifting gas. Gas balloons commonly use sand, while blimps often carry metal shot in small canvas bags. Water has been the traditional ballast in rigid airships. ...
  20. The base material into which the sleepers under the track is set.
  21. An auxiliary device consisting of induction windings wound around a metal core and sometimes includes a capacitor for power correction. It is used with fluorescent and HID lamps to provide the necessary starting voltage and to limit the current during operation.
  22. A transformer which changes the voltage from your house outlet to the voltage needed to power different types of lighting.
  23. Materials, solely carried to improve the trim and the stability of the vessel. In vessels usually water is carried as ballast in tanks, specially designed for that purpose.
  24. The power supply to activate and regulate voltage in an ultraviolet (UV) lamp.
  25. A material installed over the top of a roof membrane to help hold it in place. Ballasts are loose laid and can consist of aggregate, or concrete pavers.