ballast
压舱物,镇流器,压载物,压舱石
Related Words
Definitions
- 1
- : Nautical. any heavy material carried temporarily or permanently in a vessel to provide desired draft and stability.
- : Aeronautics. something heavy, as bags of sand, placed in the car of a balloon for control of altitude and, less often, of attitude, or placed in an aircraft to control the position of the center of gravity.
- : anything that gives mental, moral, or political stability or steadiness: the ballast of a steady income.
- : gravel, broken stone, slag, etc., placed between and under the ties of a railroad to give stability, provide drainage, and distribute loads.
- : Electricity. Also called ballast resistor .a device, often a resistor, that maintains the current in a circuit at a constant value by varying its resistance in order to counteract changes in voltage.a device that maintains the current through a fluorescent or mercury lamp at the desired constant value, sometimes also providing the necessary starting voltage and current.
- 1
- : to furnish with ballast: to ballast a ship.
- : to give steadiness to; keep steady: parental responsibilities that ballast a person.
Synonyms & Antonyms
Examples
Other options include dredging around the ship and offloading ballast water, fuel, or cargo.
While not exactly the Ugly American, Sinatra provided plenty of his own homegrown ballast.
Especially the Southern ones, who by and large run the party, or at least provide its cultural ballast.
“Gold lost its structural ballast when it lost its formal relationship to money,” he concludes.
Straighten up and fly right: the capsule is rolling and jettisoning its remaining ballast masses for parachute deploy.
Spin down, turn to entry attitude and jettison ballast mass in one minute.
Sand and gravel are also used for "fill," for engine sands, railroad ballast and glass.
Old and new measurements, tonnage, time allowances and movable ballast, are all a sealed book to me.
The big sloop, hard aground and full of iron ballast, was not a thing to be moved easily.
Our new craft worked and sailed well, after a little addition of ballast.
I ordered the ballast to be thrown overboard, and determined, as our only chance, to attempt to force her over the reef.