电烙铁应与电容器塑胶套管保持适当距离，以防止过热造成塑胶套管破裂。
Soldering iron should be kept in a suitable distance from vinyl sleeve of capacitor in order to avoid sleeve crack.
电容器从放电电路断开以后，电容器中保持剩余的电荷，从而在电容器的端子之间重新建立起电压。
After a capacitor is disconnected from a discharge circuit, a residual charge remains on the capacitor, so a voltage is re-established across the capacitor terminals.
介绍一种具有干燥、照明和充电系统的演示实验装置，该装置使平行板电容器在演示时能保持所带电荷基本不变。
A parallel plate condenser with installation of drying air, lighting and charging is provided, which can keep charge numbers constant in demonstration experiment.
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