With this gate as a load, output voltage is 3 volts.
4. 这部分原因是由于地球并非球面spherical而引起的。 This is due mainly to the fact that the earth is not spherical.
5. 该力与位移displacement间的关系可用虎克定律Hook’s law来表示。 The relation of force and displacement can be expressed in Hook’s law. 6. 这些设备的体积各不相同。These devices differ greatly in size. 7. 本文首先讨论了这种信号的特点,然后论述了它的产生。
This paper begins with the discussion of this signal, followed by the description of its generation.
8. 一般可能写出的节点node和回路loop方程比需要的多。
It is generally possible to write down more node and loop equations than (are needed. 9. 这些形式form的优点是容易看出通过改变角度angle如何影响结果。 The advantage of these forms lies in that it is easily to see how changing angles affect the result. 1. 必须确定热传递朝哪个方向发生。
It is necessary to determine in which direction heat transfer takes place.
2. 有待于证明这个式子是成立的。It remains to be shown that this equation holds. 3. 我们必须搞清楚R是小于任何数的一个量。
We need to figure out that R is a quantity less than any number. 4. 这些误差限制了时间增量increment能多小的程度。
These errors limit how small the time increment can be. 5. 每样东西都是由微小的粒子构成的,这现在是众所周知的。 It is well known that every object consists of tiny particles. 6. 我们必须求出在哪一项后该级数开始收敛。
We must find after which term the series begins to converge. 7. 设A等于B的那一点处于X=C的地方。
Suppose that the point at which A is equal to B is where X=C.
8. 直角三角形right triangle是其边side中有两个相互垂直的一种三角形。 A right triangle is the triangle two of whose sides (=two of the sides of which are perpendicular to each other.
9. 这里我们使用了其表面上绕有导线的一个环ring。
Here we have used a ring on whose surface (=on the surface of which the wire is wound.
10. 没人了解我们称之为生命的那个特征。Nobody knows the characteristic (that we call life.
11. 由上述得知在该点的斜率slope为零。
From what has been described above, it follows that the slope at the point is zero. 12. 当时并不清楚大气层对无线电波有什么影响。 It was not clear what effect the atmosphere has on radio waves. 13. 我们需要知道的是这个角度为多大才能满足那个方程。
What we need to know is what (=how large this angle should be so as to satisfy that equation. 14. 所谓力的三要素(the three elements of force在我们学习力学mechanics中起很重要作用。What are called “the three elements of a force” plays an important role in our study of mechanics.
15. 人们只需要在R上并接一个电容器。All one need do is to connect a capacitor across R.
16. 我们能求出输出功率(output power为最大的电流。
We can find out the current at which the output power is a maximum.
17. 本书首先论述了使用固态器件(solid-state的电子线路,然后简要地解释了采用电子管(electron tube的电路。
This book first describes the electronic circuits using solid-state devices, after which a brief explanation of circuits using electron tubes is presented.
1.理想的调制方法(modulation scheme与现有方法相比具有带宽(bandwidth小,实
现简单,成本低和误码率(error rate低的优点。The ideal modulation scheme has the advantage over those available of narrow bandwidth, easy realization, low cost and error rate.
2.晶体管确实能放大信号,但它究竟能放大信号多少倍取决于该晶体管类型。Transistors do amplify signals; however how many times it is that it can amplify signals depends on the type of the transistor.
3.在基极(base接地的情况下,Q5的阻抗(impedance很高。 With base grounded, Q5 has a very high impedance.
为了让读者更好地理解通讯系统,就必须对信息论有深入的了解。For the reader to understand the communication system better, it is necessary to have deep knowledge of information theory.
各种集成电路的产量较1998年增加了4倍。The product of all ICs is 5 times that of 1998.
4.该芯片(dice是直径为零点零几厘米的一个小方块。
The dice is a small cube the diameter of a few hundredths of a centimeter. 5.传输线屏蔽(shielding越好,传输效果越好,传输距离就越远,这是通信常识。The better the shielding of transmission lines, the better the transmission effect and the further they can transmit, a common sense in communication.
6.在采用这些调制类型时,不论是调频(FM、调幅(AM、还是单边带(SSB,都需 考虑带宽(bandwidth效率和功率效率之间的平衡关系。
In adopting these modulation types, whether FM, AM, or SSB, the balance between bandwidth efficiency and power efficiency should be considered.
7.银是最好的导体,其次是铜。Silver is the best conductor, followed by copper. 8.像我们用来测量电压的这种仪表称为电压表。
Such meters as we use to measure voltage are called voltmeters. 9.圆心在原点,半径为α的圆的方程为x2+y2=α2。
The equation to the circle of radius a, with the center at the origin, is … 10.一个常数,无论多大,都不能说成是无穷大。
A constant, however great it is, can not be spoken of as an infinity.
11.所谓电动势(EMF就是指没有电流流动时电池两端的电位差。What is called EMF is
the potential difference across the terminals of a battery without current flowing. 12.在所有这些蓝牙设备中,该设备的传输速率高达每秒3Mb。
Of all these Bluetooth devices, this one can transmit at as high a rate as 3Mb/s. 13.无线局域网(LAN,费用较低,速度较快,现已用于家庭和公司。
Low in cost and high in speed, the wireless LAN has been widely used in companies and families.
1. f(x表示了物体离透镜lens的距离。
f(x represents the distance the object is from the lens. 2. 该系数用来度量固体受热时膨胀expand的量。
This coefficient is used to measure the amount a solid will expand when heated. 3. 所谓增益gain是指放大器amplifier放大信号的倍数。
By “gain” is meant the number of times an amplifier amplifies sign als. 4. 顾名思义,本章主要讲矩阵matrices。
As the name shows, this chapter deals mainly with matrices. 1. 同极相斥是非常有用的物理现象。
Like poles repelling each other is a very useful physical phenomenon. 2. 存在量子使我们能够用传统方法描述原子粒子的运动。
科技英语写作---句子翻译.
