现今，医生们担心会爆发世界性的流行病。Today, doctors are fearing a worldwide epidemic.对流行病的控制the containment of the epidemic卫生局试图消灭这种流行病.The Sanitary Board tries to stamp out the epidemic....
Materials and physical configuration of relays determine inherent capacitances among their components.继电器的材料和物理配置决定了其元件间的固有电容.In reality, there are leakage resistances and stray capacitances and to everything.但在实际应用中, 它们...