英语翻译专英There may be times,however,when the model is inadequate.The battery voltage,for example,may drop as more and more current is drawn,or as the battery ages.The lightbulb’s resistance may change as it heats up,and the filament may ha

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英语翻译专英Theremaybetimes,however,whenthemodelisinadequate.Thebatteryvoltage,forexample,maydropasmoreand

英语翻译专英There may be times,however,when the model is inadequate.The battery voltage,for example,may drop as more and more current is drawn,or as the battery ages.The lightbulb’s resistance may change as it heats up,and the filament may ha
英语翻译
专英
There may be times,however,when the model is inadequate.The battery voltage,for example,may drop as more and more current is drawn,or as the battery ages.The lightbulb’s resistance may change as it heats up,and the filament may have a bit of inductance and capacitance associated with it as well as resistance so that when the switch is closed,the current may not jump instantaneously from zero to some final,steadystate value.The wires may be undersized,and some of the power delivered by the battery may be lost in the wires before it reaches the load.These subtle effects may or may not be important,depending on what we are trying to find out and how accurately we must be able to predict the performance of the circuit.If we decide they are important,we can always change the model as necessary and then proceed with the analysis.
The first property,known as Kirchhoff’s current law (abbreviated KCI),states that at every instant of time the sum of the currents flowing into any node of a circuit must equal the sum of the currents leaving the node,where a node is any spot where two or more wires are joined.This is a very simple,but powerful concept.It is intuitively obvious once you assert that current is the flow of charge,and that charge is conservative-neither being created nor destroyed as it enters a node.Unless charge somehow builds up at a node,which it does not,then the rate at which charge enters a node must equal the rate at which charge leaves the node.

英语翻译专英There may be times,however,when the model is inadequate.The battery voltage,for example,may drop as more and more current is drawn,or as the battery ages.The lightbulb’s resistance may change as it heats up,and the filament may ha
也许有些时候,然而,当模型是不能够充分说明的.电池电压,例如,可能会下降,随着电流的逐渐增加,电压会降低,或随着电池的老化电压也降低.当灯泡被加热时,电阻会增加,并且灯丝可能有电感和电容与它相关的阻力,这样,当开关关闭时,电流可能不会瞬间从零跳到最终的稳态值.可能是电线不够粗,以及由电池传递的能量在到达负荷前损失在线路里.这些微妙的影响可能并不重要,这取决于我们试图求出什么和我们必须能够预测的电路的精确性的范围.如果我们决定他们是重要的,我们可以根据需要随时更改模型,然后进行分析.
第一个属性,熟知的基尔霍夫电流定律(简称KCL),指出在每一个瞬间的到任何一个电路节点电流之和必须等于该离开节点的电流,该接点可以是任何一个由两条及以上的电线的连接点.这是一个非常简单,但是非常有力的概念.显而易见的,当你认为电流是电荷的移动,电荷进入到一个接点时电荷不被创造和不消失,除非以某种方式积聚电荷在一个节点,它没有,电荷进入节点的速度一定等于电荷离开节点的速度.
原著:YXJ

英语翻译专英There may be times,however,when the model is inadequate.The battery voltage,for example,may drop as more and more current is drawn,or as the battery ages.The lightbulb’s resistance may change as it heats up,and the filament may ha May,don't t____ here and there,or your hands will be dirty. May,don't t____ here and there,or your hangs will be dirty. Don't play on the road,or there may be an a______. 英语翻译“Amazon.escustomers in almost all countries on Europe can choose from millions ofgreat products from our catalogue.However,there may still be certain items that Amazon can’t send there for operational reasons,on those cases you will s 英语翻译( )future,there may be less ice in the seaA,inB,fromC,onD,since 英语翻译1.However,there are other indications that high school cheating may be on the rise 英语翻译那There may be instances when ......应该怎么翻译呢? may there be a be或者there may be a be这种语法可以吗 My life may have to be short,but there's no reason why it can't be beautiful! May be my girlfriend?英语翻译 ...I heard they went skiing last winter ....It ------have been true because there was littlesnow there .A may be B won,t be C couldn,t ____ the woman over there be our new English teacher?She ____ be,but i'm not sure.A、May;can't B、Can;can't C、Can;may D、May;mustn't ---_____ the man over there be your Chinese teacher?---No,it ___ be him.A.Can,mustn't B.May,can't C.Must,mustn't D.May,may not 选哪个?请解释为什么? If you don't move that bag,there may be an accident.(同义句转换)改为___move that bag,___there may be an accident. There may be more than one! there may be instances when . 怎么翻译? There may ___(be) some rain tomorrow