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电子工程专业英语实用15句

作者：lzg 文章来源：国和网校发布时间：2019-11-06 浏览：

1.Consider what we know intuitively about an integrator. If you apply a DC signal at the input (i.e. , zero frequency), the output will describe a linear ramp that grows in amplitude until limited by the power supplies. Ignoring that limitation, the response of an integrator at zero frequency is infinite, which means that it has a pole at zero frequency. (A pole exists at any frequency for which the transfer function’s value becomes infinite.)

1.我们怎么从直观上理解积分器呢？假设在输入端加上一个直流信号（频率为0），那么在输出端将会出现一个线性斜坡信号,其幅度一直增至电源电压。如果不考虑电源电压对输出信号的限制，积分器在零频率上的响应将是无穷大，这意味着它在零频率点上存在一个极点（在任何使传递函数为无穷大值的频率点上都存在一个极点）。

2.While the complex frequency’s imaginary part helps describe a response to AC signals, the real part helps describe a circuit’s transient response.

2.复频率的虚部有助于描述电路对交流信号的响应，而其实部有助于描述电路的瞬态响应。

3.The low-pass filter’s transient response is more stable, because its pole is in the negative-real half of the complex plane.

3.低通滤波器的瞬态响应更加稳定，因为其极点位于复平面的左半部。

4.Clock Driver Skew (Intrinsic Skew) is the amount of skew caused by the clock driver itself. There are two kinds of clock driver devices; buffer devices and PLL-based devices. Skew occurs on the output of the buffer devices because of the differences in propagation delay of the input signal through the device.

4.时钟驱动器偏移（固有偏移）是由时钟驱动器自己引起的偏移。有两种类型的时钟驱动设备，缓存器件和基于锁相环的器件。偏移发生在缓冲器件的输出端，因为输入信号通过器件时，其传播延迟有差异。

5.The capacitance is directly proportional to the dielectric constant of the material and to the area of the plates and inversely to the distance of the plates.

5.电容器的电容量与介质的介电常数及平板的面积成正比，与平板间的距离成反比。

6.The reading given when the pointer stops moving is the insulation resistance, which is normally high if the capacitor is in good condition.

6.指针停止转动时的读数就是电容器的绝缘电阻，假设电阻器没有毛病的话，绝缘电阻值通常很高。

7.The BIOS looks at the sequence of storage devices identified as boot devices in the CMOS Setup. "Boot" is short for "bootstrap", as in the old phrase "Lift yourself up by your boot straps". Boot refers to the process of launching the operating system. The BIOS tries to initiate the boot sequence from the first device using the bootstrap loader.

7.BIOS查看一系列在CMOS设置中被确定为引导设备的存储设备。Boot是bootstrap的缩写，就好像那句老话“通过你的靴带把你自己提起来。”Boot指的是启动操作系统的过程。BIOS使用引导加载程序尝试在第一个设备中确定启动顺序。

8.A third issue that has had a large impact on adoption is the widespread use of prepaid mobile phones in Europe (up to 75% in some areas). These can be purchased in many stores with no more formality than buying a radio. You pay and you go. They are preloaded with, for example, 20 or 50 euro and can be recharged when the balance drops to zero.

8.被采纳的第三个已经产生很大影响的问题是，预付费移动电话在欧洲的广泛使用（有些地区达到了75%）。这些移动电话可以在许多商店里购买，购买手续不会比买一个收音机复杂。一手交钱，一手交货。这些电话被预充值了20或50欧元，当余额为0时，可以再充值。

9.practically every teenager and many small children in Europe have (usually prepaid) mobile phone so their parents can locate them, without the danger of the child running up a huge bill. If the mobile phone is used only occasionally, its use is essentially free since there is no monthly charge or charge for incoming calls.

9.几乎所有欧洲的少年和小孩子都持有移动电话（通常是预付费的），所以他们的家长可以找到他们，而不用承担孩子会欠巨额账单这样的风险。如果你只是偶尔使用移动电话，它用起来几乎是免费的，因为没有月租费，接听也不需要收费。

10.An integrator is the simplest filter mathematically, and it forms the building block for most modern integrated filters.

10.从数学公式上讲，积分器是最简单的滤波器；它是构成大多数现代集成滤波器的基本模块。

11.An implicit assumption in our discussion is that the power levels of all stations are the same as perceived by the receiver.

11.在我们的讨论中隐含着一个假设是，所有基站的功率水平在接收器看来都是一样的。

12.CDMA it typically used for wireless systems with a fixed base station and many mobile stations at varying distances from it.

12.CDMA通常用于无线系统，系统中包含一个固定站和许多与它距离不同的移动站。

13.The power levels received at the base station depend on how far away the transmitters are.

13.基站收到的功率水平取决于发射机与它的距离。

14.A good heuristic here is for each mobile station to transmit to the base station at the inverse of the power level it receives from the base station. In other words, a mobile station receiving a weak signal from the base station will use more power than one getting a strong signal. The base station can also give explicit commands to the mobile stations to increase or decrease their transmission power.

14.这里有一个很好的启发，对于每个移动站来说，它们所发射到基站的功率与它们从基站接收到的功率相反。换句话说，一个从基站收到弱信号的移动台，将比一个收到强信号的移动台发射更高的功率。基站还可以向移动台发送明确的指令，让它们增加或者减少其发射功率。

15.Ideally, the component should be removed from the circuit completely; but if this is inconvenient (at least until if proves necessary for removal), one or more leads should be disconnected and care taken to avoid current paths in neighboring components when testing.

15.理想的方法是把该元件从线路中完整取出。但如果不方便的话（至少要在判别需要去掉之前），应该断开一根或几根引线，应当避免在测试时邻近的元件之间有电流通路。