ballasts的中文意思、音标与词形变化

n. （保持船身稳定的）压舱物( ballast的名词复数 ); 镇定物; 安定; 压舱材料

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