可变电容器

Instead timing circuits use a fixed capacitor and a variable resistor if it is necessary to vary the time period.

相反定时电路使用固定电容器和可变电阻如果有必要更改的时间期限。

The resonance tank includes four p-n junction diode varactor pairs and a spiral inductor for each differential VCO, and a voltage- level-shift circuitry is utilized to decide proper DC levels for each pair of varactors.

此共振腔由四对PN接面式可变电容器及一个螺旋型电感所组成，并有一个电位偏移电路用来适当决定每对可变电容之偏压点。

The invention comprises a high-voltage generator and a discharged electrode pair which are connected in series in turn, wherein the a capacitor is connected in series in a discharge major loop and the capacitor can be a fixed capacitor or a variable condenser or a padder capacitor and also can be a variable condenser which is controlled by a circuit.

本发明包括依次串联的高电压发生器，放电电极对，在放电主回路中串联有一个电容器；所述电容器可为固定电容器、可变电容器、微调电容器，还可以是受电路控制的可变电容器。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。