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    電子工程專業英語實用15句

    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.我們怎么從直觀上理解積分器呢?假設在輸入端加上一個直流信號(頻率為0),那么在輸出端將會出現一個線性斜坡信號,其幅度一直增至電源電壓。如果不考慮電源電壓對輸出信號的限制,積分器在零頻率上的響應將是無窮大,這意味著它在零頻率點上存在一個極點(在任何使傳遞函數為無窮大值的頻率點上都存在一個極點)。


    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.復頻率的虛部有助于描述電路對交流信號的響應,而其實部有助于描述電路的瞬態響應。


    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.低通濾波器的瞬態響應更加穩定,因為其極點位于復平面的左半部。


    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.時鐘驅動器偏移(固有偏移)是由時鐘驅動器自己引起的偏移。有兩種類型的時鐘驅動設備,緩存器件和基于鎖相環的器件。偏移發生在緩沖器件的輸出端,因為輸入信號通過器件時,其傳播延遲有差異。


    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.電容器的電容量與介質的介電常數及平板的面積成正比,與平板間的距離成反比。


    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.指針停止轉動時的讀數就是電容器的絕緣電阻,假設電阻器沒有毛病的話,絕緣電阻值通常很高。


    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設置中被確定為引導設備的存儲設備。Boot是bootstrap的縮寫,就好像那句老話“通過你的靴帶把你自己提起來?!盉oot指的是啟動操作系統的過程。BIOS使用引導加載程序嘗試在第一個設備中確定啟動順序。



    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.被采納的第三個已經產生很大影響的問題是,預付費移動電話在歐洲的廣泛使用(有些地區達到了75%)。這些移動電話可以在許多商店里購買,購買手續不會比買一個收音機復雜。一手交錢,一手交貨。這些電話被預充值了20或50歐元,當余額為0時,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.幾乎所有歐洲的少年和小孩子都持有移動電話(通常是預付費的),所以他們的家長可以找到他們,而不用承擔孩子會欠巨額賬單這樣的風險。如果你只是偶爾使用移動電話,它用起來幾乎是免費的,因為沒有月租費,接聽也不需要收費。


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

    10.從數學公式上講,積分器是最簡單的濾波器;它是構成大多數現代集成濾波器的基本模塊。


    11.An implicit assumption in our discussion is that the power levels of all stations are the same as perceived by the receiver.
    11.在我們的討論中隱含著一個假設是,所有基站的功率水平在接收器看來都是一樣的。


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

    12.CDMA通常用于無線系統,系統中包含一個固定站和許多與它距離不同的移動站。


    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決于發射機與它的距離。


    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.這里有一個很好的啟發,對于每個移動站來說,它們所發射到基站的功率與它們從基站接收到的功率相反。換句話說,一個從基站收到弱信號的移動臺,將比一個收到強信號的移動臺發射更高的功率?;具€可以向移動臺發送明確的指令,讓它們增加或者減少其發射功率。


    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.理想的方法是把該元件從線路中完整取出。但如果不方便的話(至少要在判別需要去掉之前),應該斷開一根或幾根引線,應當避免在測試時鄰近的元件之間有電流通路。

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