一级黄色性爱,超碰导航亚洲,91热热,AV一级性爱,中文字幕牛牛婷婷

The loss tangent of power capacitor is a capacitor, the actual is not an ideal capacitor, applying AC voltage in the role, in addition to the reactive power Q will output a certain capacity, in the plate internal dielectric capacitors, capacitors (...

When the tantalum capacitor is installed on the PCB board, under the mechanical stress, when the tantalum capacitor installation is not at that time, it is easy to lead the lead to bear large stress or resonance. The following should be taken into...