ballast

英 [ˈbæləst]

美 [ˈbæləst]

n. (船中保持平衡的)压舱物; (热气球的)镇重物; (用作公路或铁路路基的)道砟
vt. 给某物装上压舱物; 给…铺道渣; 使稳定; 使沉着

过去式：ballasted　过去分词：ballasted　现在分词：ballasting　复数：ballasts　第三人称单数：ballasts　

Collins.1 / BNC.20248 / COCA.14813

牛津词典

noun

（船中保持平衡的）压舱物；（热气球的）镇重物
heavy material placed in a ship or hot-air balloon to make it heavier and keep it steady
（用作公路或铁路路基的）道砟
a layer of stones that makes a strong base on which a road, railway/railroad, etc. can be built

压舱物；镇重物
Ballastis 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.

noun

any heavy material used to stabilize a ship or airship
an electrical device for starting and regulating fluorescent and discharge lamps
Synonym:light ballast
a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
Synonym:ballast resistorbarretter
an attribute that tends to give stability in character and morals
coarse gravel laid to form a bed for streets and railroads

verb

The significance of ballast to lighting quality and efficiency?
镇流器对照明质量和照明能效的意义？
This is the air-actuated poppet valve that will serve as the ballast tank blow vent.
这是空气驱动锥阀将充当压载水舱的打击，发泄。
At turnouts, ballast distribution shall take into consideration the additional volume needed for the turnout.
道岔上的道碴分配应考虑到道岔需要的额外容量。
Specially designed for electronic ballast and energy-save lamp.
专为电子节能灯，镇流器设计制造。
Voltage provided to a ballast by a power line or power supply.
由电源或输电线输入到包括镇流器的电压。
Function test and automatic controller test for ballast pump.
压载泵效用试验和自动控制装置试验。
Supplement ballast and renovate subgrades;
补充道碴和对路基进行整修；
Talking about International Convention for the Control and Management of Ship's Ballast Water and Sediments
浅谈国际船舶压载水和沉积物控制与管理公约
Alternating-current high-voltage contactors Ballast, ignitor and terminal pillars are installed in the body.
GB14808-1993交流高压接触器灯体内装有镇流器、触发器和接线柱。
Can cargo and ballast pumps be controlled from the ccr?
货泵和压载泵能否在货控室控制？