1. Wholesale of Brick, Tile, Ballast, Cement and Products. 砖瓦，砂石，水泥及其制品批发业“，”
2. A ballast with one class insulation system shall not represent a ballast with a different class insulation system. 具有某级绝缘系统的镇流器不能代表具有不同级别绝缘系统的镇流器。
3. For a transformer type ballast, the voltage value to be applied from this table is the rms voltage rating of the capacitor as specified on the ballast. 对于一个变压器型的（传统）镇流器，本表中所列出的电压值是镇流器上标注的电容器的额定电压有效值。
英英解释
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
4. a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluc
5. an electrical device for starting and regulating fluorescent and discharge lamps v.
1. make steady with a ballast
