And we cleared out all the white dielectric material from inside the horn.

我们把喇叭内所有 白色介电材料都清理掉了。

We call this it's dielectric property.

我们称之为介电特性。

And this something is called a dielectric – typically an insulating material like plastic or glass.

这种东西叫做绝缘体。通常，它是 它是一种绝缘材料，例如塑料和玻璃。

A dielectric is used to increase capacitance while preventing any charge from jumping from plate to plate.

绝缘体用于增加容量，同时 防止任何货从一个到另一个。

So, by using a very thin dielectric, the distance is decreased while the plates remain separate.

因此，使用非常薄的电介质，可以减少 距离，而两个面板保持分开。

Once the steel pipe is fully welded closed, it's slowly filled with a non-conductive  oil known as liquid dielectric.

一旦钢管全焊接封闭，它就会慢慢充满一种称为液体电介质的非导电油。

And that's why the full equation for capacitance includes a dielectric constant, K.

因此，全电容方程包含一个常数 隔离，K。

So dielectrics can help capacitors hold even more energy.

所以电介质有助于电容器存储更多 的能量。

And that’s why the full equation for capacitance includes a dielectric constant, K. So dielectrics can help capacitors hold even more energy.

这就是为什么整的电容方程包括介电常数 K。因此电介质可以帮助电容器保持更多的能量。

Circulating the dielectric oil helps to keep  the temperature within the pipe consistent along the line, but can't control how that average  temperature changes over time.

循环介电油有助于保持管道内的温度沿线一致，但无法控制平均温度随时间的变化。

Today here at Crash Course Chemistry we learned about some of the properties of water that make it so special: it's polarity and it's dielectric property.

今天，在化学速班，我们了解了水的一些特殊特性：极性和介电特性。

And the molecules that make up dielectrics are polar, which means one side of the molecule is slightly positive while the other side is slightly negative.

构绝缘体的分是极性的，这意味着 分的一端是正的，而另一端是负的。

At each end of the  transmission line is a plant filled with pumps and tanks to pressurize - and often to  circulate - the dielectric oil in the pipe.

输电线路的每一端都有一个装有泵和储罐的设备，用于对管道中的介电油加压并经常进行循环。

Over hundreds or thousands of cycles of TMB, the paper insulation around each conductor  can begin to soften or tear, eventually leading to a dielectric breakdown (in other words, arcs and short circuits).

经过数百或数千次 TMB 循环，每个导体周围的纸绝缘体可能会开始软化或撕裂，最终导致介电击穿（换句话说，电弧和短路）。

29. Question: What is the key factor to consider when choosing a PCB material for high - frequency applications in PCBA? Answer: Low dielectric constant and low dissipation factor to minimize signal loss.

29. 问题：为 PCBA 中的高频应用选择 PCB 材料时要考虑的关键因素是什么？答案：低介电常数和低耗散因数，可最大限度地减少信号损失。

They climbed back into the dish with brooms and scrubbing brushes and carefully swept it clean of what they referred to in a later paper as white dielectric material, or what is known more commonly as bird shit.

他们拿起扫帚和抹布再次爬进抛面天线，小心翼翼地把他们后来在一篇论文中称之为白色电介质的、用更通常的说法是鸟粪的东西扫得干干净净。

54. Question: How does the choice of PCB laminate material influence the performance of high - speed PCBA? Answer: High - speed PCBA requires laminate materials with low dielectric loss and stable electrical properties to minimize signal attenuation and distortion.

54. 问题：PCB 层压板材料的选择如何影响高速 PCBA 的性能？答案：高速 PCBA 需要具有低介电损耗和稳定电气性能的层压材料，以最大限度地减少信号衰减和失真。

The capacitor is shaped like a deep trench dug into silicon and is composed of  two conductive surfaces separated by a dielectric insulator or barrier just a few atoms thick, which  stops the flow of electrons but allows electric fields to pass through.

电容器的形状像在硅上挖出的深沟槽， 由两个导电表面组， 中间由仅几个原厚的电介质绝缘体或屏障隔开，这可以阻止电流动但允许电场通过。