空气电容器

This article introduces a parallel board with air interval to measure the degreement of the change of ε, and then to determinate its usable time limit, which can alter traditional oil-changing by time into oil-changing by its quality and can get the best use of its effect and life-span.

为此，应用平行板空气隙电容器测定润滑油液的介电常数来确定润滑油液的变质程度，从而判断是否可继续使用，使传统的按期换油改为按质换油，并使润滑油液获得合理的使用效果和使用寿命。

This instrument used the parallel p late capacitor to measure relative dielectric constant of film, which equaled to the ratio of the capacity value full of film and the capacity value full of air. It app lied the equipotential ring technology to reduce the error caused by edge effect in the two p late edges, and greatly increased the measurement p recision and accuracy.

该仪器采用将平行板电容器充满薄膜的电容值与充满空气的电容值相比的方法得出薄膜的相对介电常数，并采用等位环技术，减小了两极板在边缘处产生边缘效应所带来的误差，大大提高了测量的精度和准确性。

Air auto switch is used as low-voltage control and protection.

低压柜应采用抽屉式开关柜，空气自动开关作为低压控制和保护，设置电容器柜作集中自动补偿，。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。