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If a heart beats too slowly, the pacemaker will use electrical signals to help set a normal rate.
VOA: special.2010.06.02
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If you put the electrodes in the right position and you measure in the right way you can detect the electrical activity of the heart and record it on a strip recorder like this one shown here, or display it on a computer.
如果将电极放置正确,并采用正确的方式检测,就能检测到心脏的电活动,并将它记录在像这样的长图记录仪上,或者显示在电脑上
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Over there, I studied for my Master's, where I got a Master's in Electrical Aerospace Engineering.
在那儿，我攻读了宇航电气工程硕士。
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This electrical machine could send and receive "beeps" and other sounds over a wire.
VOA: special.2010.05.14
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Because there are ions moving back and forth, there's a current that flows and there's a electrical potential that's generated.
由于离子的进进出出,就产生了电流流动,并且形成了电势差
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A seizure is like an electrical storm in the brain.
VOA: special.2009.09.04
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I don't know if you know how a spark plug works, but for the electrical current to fly into operation in a spark plug, the two points of contact have to be gapped.
我不知道你们是否知道,火花塞是怎样工作的，在电流通入火花塞中使它运转之前，两个接触点之间需要有空隙。
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Give it a strong electrical charge.
VOA: special.2009.07.18
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He had a little electrical thing just on— I don't know how he thought to do this.
将一个小型的电极插在,不知道他是怎么想到要这么做的
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In June,a bighead Asian Carp was found above the electrical barrier about ten kilometers from Lake Michigan.
VOA: standard.2010.07.20
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I mentioned previously that we do not know a lot about how the mechanical stimulation is being converted into chemical and electrical energy.
先前我曾说过,对于机械刺激到化学和电能的转换,我们还知之甚少。
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She went to college and earned a Master's degree in electrical engineering.
VOA: standard.2009.12.04
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They included a pizza chef, an electrical engineer, a bank executive, a dairy wholesaler, a school teacher and four stockbrokers; stockbrokers get the word faster.
这些人中,包括一位披萨厨师,一位电子工程师,一位银行经理,一位牛奶批发商,一位老师,和四位股票经纪人,股票经纪人散播消息的速度更快
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If you will buy stock in an electrical utility which has a guaranteed revenue stream, because no matter how bad the economy gets, a lot of people still use electricity, you don't expect it to fluctuate a lot.
如果你在有着,保障性年收入的电气供应股票投资，因为不管经济变得怎么查，人们还得用电，它不会降多少。
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Now, if you're an engineer, and you use the ideal gas law to design a chemical plant or a boiler or an electrical plant, you know, a steam plant, you're going to be in big trouble.
比如说锅炉，蒸汽机,我们会遇到一个大问题：,我们设计的机器将无法运作，因为对大部分实际气体。
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So, when the value of the average valence electron energy lies between 11 eV and 13 eV, we have these elements that are neither fish nor fowl, and you'll see in a little bit their unique electrical properties.
所以，当平均价电子能,在11eV到13eV之间时，这些元素介于金属和非金属之间，你们将进一步,看到它们独特的电性质。
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Here is as pacemaker and this pacemaker does the same thing that a heart pacemaker does, it generates periodic electrical signals.
它和心脏起搏器发挥的作用相似,发出周期性的电信号
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The flow of information is really a flow of electrical potential and it goes in one direction only.
信息流实际上就是电势差的流动,并且流动是单向性的
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Rather than by forming an image or a picture you put electrodes on the surface of the body and measure the electrical potential as a function of position on the body.
它并不对人进行直接的造影,而是将电极放到身体表面,通过测量该位置电势能,表征该部位的生理状态
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They carry a potential, that is, if you could - if you had a tiny, tiny electrical meter, you could one put one electrode on one side of the cell membrane, on the extracellular side and one on the intracellular side and measure, you would measure a potential difference; just like a battery you would measure a potential difference.
它们带有电势,就是说,如果你能有一个足够小的电位计,可以把一个电极放在细胞膜一侧,假设放在细胞外的一侧,另一个电极放在细胞内侧并测量,你能测到一个电势差,就像电池那样能测到电势差
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As time goes on, we've developed ever more complex machines to study people and we've talked about some of these already: EKG machines, so an example of an electrical device that can be used to monitor a very elaborate function deep inside your body, the beating of your heart and the rhythm of your heart.
如今,我们已经有功能更加复杂的设备,来研究人类,比如之前说到的心电图,我们使用电子装置,对身体内部机能进行精确地监控,具体到心电图就是心跳和心率
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So, there's a continuum of electrical connection in the heart that allows an action potential to sweep across the surface of the heart and for the heart to beat in a coordinated fashion.
所以 心脏细胞有电偶联的连结组织,以使动作电位平稳在细胞表面传递,保证心脏的协调性跳动
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The cells that take an electrical signal, which is coming down your nerve and convert it into a muscle contraction work this way, so 'neuro' nerve, muscle junctions act based on ligand-gated ion channels.
依靠相同的工作原理,细胞将来自于神经的,电信号传递到细胞收缩肌中,所以神经和肌肉关节运动,都基于配体门控离子通道
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This is a mechanism by which an electrical signal comes here, it gets translated into a chemical signal, the chemical diffuses across the gap and reinitiates a - an electrical signal in the next cell and that's one way that it happens.
这就是电信号产生的机理,电信号翻译成化学信号,化学物质扩散过突触间隙,重新激起下个细胞中的电信号,这是一种方式
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