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ballast    音標拼音: [b'æləst]
n. 壓艙物,壓載,沙袋;鎮流器;鎮定,沉著

壓艙物,壓載,沙袋;鎮流器;鎮定,沈著

ballast
n 1: any heavy material used to stabilize a ship or airship
2: coarse gravel laid to form a bed for streets and railroads
3: an attribute that tends to give stability in character and
morals; something that steadies the mind or feelings
4: a resistor inserted into a circuit to compensate for changes
(as those arising from temperature fluctuations) [synonym:
{ballast resistor}, {ballast}, {barretter}]
5: an electrical device for starting and regulating fluorescent
and discharge lamps [synonym: {ballast}, {light ballast}]
v 1: make steady with a ballast

Ballast \Bal"last\, v. t. [imp. & p. p. {Ballasted}; p. pr. &
vb. n. {Ballasting}.]
1. To steady, as a vessel, by putting heavy substances in the
hold.
[1913 Webster]

2. To fill in, as the bed of a railroad, with gravel, stone,
etc., in order to make it firm and solid.
[1913 Webster]

3. To keep steady; to steady, morally.
[1913 Webster]

'T is charity must ballast the heart. --Hammond.
[1913 Webster]


Ballast \Bal"last\ (b[a^]l"last), n. [D. ballast; akin to Dan.
baglast, ballast, OSw. barlast, Sw. ballast. The first part
is perh. the same word as E. bare, adj.; the second is last a
burden, and hence the meaning a bare, or mere, load. See
{Bare}, a., and {Last} load.]
1. (Naut.) Any heavy substance, as stone, iron, etc., put
into the hold to sink a vessel in the water to such a
depth as to prevent capsizing.
[1913 Webster]

2. Any heavy matter put into the car of a balloon to give it
steadiness.
[1913 Webster]

3. Gravel, broken stone, etc., laid in the bed of a railroad
to make it firm and solid.
[1913 Webster]

4. The larger solids, as broken stone or gravel, used in
making concrete.
[1913 Webster]

5. Fig.: That which gives, or helps to maintain, uprightness,
steadiness, and security.
[1913 Webster]

It [piety] is the right ballast of prosperity.
--Barrow.
[1913 Webster]

{Ballast engine}, a steam engine used in excavating and for
digging and raising stones and gravel for ballast.

{Ship in ballast}, a ship carrying only ballast.
[1913 Webster]

44 Moby Thesaurus words for "ballast":
balance, break bulk, break out ballast, clear for action,
clear the decks, consideration, counterbalance, counterpoise,
counterweight, equipoise, equivalent, firm, firm up, freeze,
give-and-take, hold, immobilize, keep, lead, makeweight, nail down,
offset, pin down, poise, quid pro quo, retain, sandbag, setoff,
shift ballast, shoot ballast, something of value, stabilitate,
stabilize, steady, stick, tit for tat, transfix, trim, trim ship,
trim up, weigh down, weight, weight down, wing out ballast

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英文字典中文字典相關資料:
  • BALLAST Definition Meaning - Merriam-Webster
    The meaning of BALLAST is a heavy substance (such as rocks or water) placed in such a way as to improve stability and control (as of the draft of a ship or the buoyancy of a balloon or submarine) How to use ballast in a sentence
  • Electrical ballast - Wikipedia
    An electronic ballast uses solid state electronic circuitry to provide the proper starting and operating electrical conditions to power discharge lamps An electronic ballast can be smaller and lighter than a comparably rated magnetic one
  • BALLAST | English meaning - Cambridge Dictionary
    BALLAST definition: 1 heavy matter such as sand, stone, or water that is used at the bottom of a ship or a hot-air… Learn more
  • 111. What Exactly Is a Ballast and Why Does It Matter?
    The purpose of a ballast is to control the current flow to your lamp When you flip the switch, electricity flows through the ballast to the lamp The ballast restricts the voltage to a safe level, so the gas inside the discharge lamps (like fluorescent or HID lamps) ignites, producing light
  • Understanding Ballast: Types, Functions, and Applications
    Ballast refers to material that is used to provide stability to a system, counteracting forces that may create instability It serves as a foundational component, ensuring that structures do not sway or tip over under varying conditions
  • Electronic Ballast: Working Principle Circuit Diagram
    An electronic ballast, also known as an electrical ballast, regulates the initial voltage and current flowing through lighting devices to ensure stable operation It does this through the principle of electrical gas discharge
  • BALLAST - Definition Translations | Collins English Dictionary
    Ballast is any substance that is used in ships or hot-air balloons to make them heavier and more stable Ballast usually consists of water, sand, or iron [ ]
  • Ballast - definition of ballast by The Free Dictionary
    Heavy material that is carried to improve stability or maintain proper trim, as on a ship, or to limit buoyancy, as on a balloon 2 a Coarse gravel or crushed rock laid to form a bed for roads or railroads b The gravel ingredient of concrete 3 Something that gives stability, especially in character 1 To stabilize or provide with ballast 2
  • BALLAST Definition Meaning | Dictionary. com
    What does ballast mean? In general, ballast means something that provides stability or weight In a specific sense, it’s most commonly used to refer to heavy material used to stabilize a vessel, such as a ship, especially when it’s not carrying cargo
  • What Is an Electrical Ballast? - ElectronicsHacks
    The ballast provides power to the light source, while the bulb itself is the light source The ballast regulates the current flow from an AC power source to provide a constant current for powering any given type of lighting fixture or other device





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