Pericardial effusions typically lead to low QRS voltages or electrical alternans, and can be seen on an echocardiograph.

心包积液常显示QRS低电压或电交替现象；超声心动图也可做出诊断。

They need to be low voltage.

它们得是低电压。

They are represented by high and low voltages.

它们通过高电压和低电压来表示。

Electrons flow from high to low voltage.

电子从高电压流向低电压。

Fire warning lights, smoke warning lights, low voltage lights.

火灾警示灯、烟雾警示灯、低压灯。

This system has low voltage and short transmission distance.

该系统电压低, 传输距离短。

This meticulous process results in actuators that require significantly lower voltage and can carry more payload.

这的过程使得执行器所需的电压显着降低，载更多的有效载荷。

The farther away from the point charge, the lower the voltage.

离点电荷的距离越大， 紧张感降低。

Another problem with DC, with direct current, was that it was not easily converted to higher or lower voltages.

另个直流电的问题是，它不容易转换为高电压或低电压。

Methods have also been developed to enable us to more easily convert DC to higher and lower voltages.

方法也已经开发出来，使我们够更轻松地将直流电转换为更高或更低的电压。

Just like a river flows from high elevation to low elevation, electric charge flows from high voltage to low voltage.

就像河流从高压流向低压样，电荷从高压流向低压。

It's important to note that Edison's light bulb ran at a low voltage of 110 volts on a direct current supply.

需要注意的是，爱迪生的白炽灯泡在直流电源供应下以110伏的低电压运行。

For the same current, the voltage drop across greater resistances is higher than the lower voltage drops for the low resistances.

对于相同的电流，较大电阻器上的电压降高于低电阻器的较低电压降。

And then it eventually gets to our apartment buildings or our homes and then comes into our house at a much lower voltage.

然后，它最终会到达我们的公寓楼或住宅，再以较低的电压进入我们的家中。

For example, a computer's main memory is made of transistors that switch between either high or low voltage levels, such as 5 volts and 0 volts.

例如， 计算机的主存储器由晶体管组成，晶体管可以在高电压或低电压（例如 5 伏和 0 伏） 之间切换。

That's because, for the same power, a lower voltage translates to a higher current, and power loss increases proportionally to the square of the current.

这是因为，对于相同的功率，较低的电压会转化为较高的电流，且功率损耗与电流的平方成正比增加。

In a capacitor, these lines run parallel to the plates, and each line that’s closer to the negative plate has a lower electric potential, or a lower voltage.

在电容器中， 这些线条与极板平行， 每条离负极板更近的线条具有更低的电势或更低的电压。

In here, the main transformer reduces the voltage and bridges the isolation boundary between the primary side high voltage and the secondary side lower voltages used throughout your computer.

在这里，主变压器降低电压，在高压的次侧和低压的二次侧之间建立隔离边界，这些低压用于你的整个计算机中。

Later, the West House Boss learned from the newspaper that someone in Europe had invented an AC system that could transform high voltage into low voltage through a transformer.

后来，西屋老大从报纸上得知，欧洲有人发明了种交流系统，可以通过变压器将高压转换为低压。

In a capacitor, these lines run parallel to the plates, and each line that's closer to the negative plate has a lower electric potential, or a lower voltage.

在电容器中，线路平行于极板，延迟更低 线路最靠近负极板，其张力较低。