科技英语写作2.ppt

1、科学英语写作过程，陈熙辉编写西安电子科技大学出版社，第一章科学英语短文写作，第三节动词郑智薰谓语格式1，动词不定式在科技写作中应熟练掌握以下几点：1，动词不定式主语可以用作形式主语(我们)。必须熟悉基尔霍夫定律。it is necessary(for us)to have a good command of kirch hoff s laws，第一章技术英语短文编写，用计算机解决牙齿问题仅需几十秒钟。it takes(some)dozens of seconds for a computer to solve this problem现在需要我们获取牙齿系数。要获得it remains now

2、(for us)to determine this coefficient牙齿电阻的电压，首先需要知道流动的电流。if it is desired to find out the voltage across this resistor，we must first know the current flowing through it，第一章技术英语短文写作，第二章，动词不定式定语从句R有很多问题需要我们考虑。there are many problems for us to consider。特别要注意第一章技术英语短文的写作，(1)“介词which动词不定式”的两种茄子文章模式。我们已经定

3、义了测量的长度和时间单位。we have defined length and time units with which to measure我们可以使用水平线作为表示沿n牙齿的轴的轴。对于a horizontal line can be taken as the axis along which to represent n牙齿，计算力矩包围的轴的最佳方法是阶梯的底部。In this case，the best choice for the axis around which to calculate torques is the base of the ladder我们将使用此字段作为讨

4、论自我特性的基础。we shall use such a field on which to base our discussion of magnetic properties，编写第一章技术英语短文，(2)the ability (tendency等)energy is defined as the ability of a body to do work有几个茄子因素会影响电容器存储电荷的能力。a few factors affect the ability of a capacitor to store a charge光波的干涉限制了望远镜辨别物体细节的能力。the interfer

5、ence of light waves puts limit on the ability of any telescope to resolve the details of an object，第一章技术英语短文写作，3其他几个文章(1)给牙齿This computer is easy to operate (2)主语和动词it形容词不定式短语。我们发现解决牙齿问题很容易。we find h very easy to solve this problem，第一章科技英语短文写作，(3)主语和物动词名词形容词不定式主动式(及源自物动词)。我们发现牙齿杨怡很难测量。we find this q

6、uantity difficult to measure。(4)名义上的不定式。名词性否定式一般要使用主动形式(习惯性地不使用why，引出名词性否定式结构是习惯性的)。我们得求X得多大才能成立牙齿不等式。we have to find how large to make x so as for this inequality to hold，第一章技术英语短文写作，(5)否定式复合结构的两种文章模式。如果不定式的逻辑主语不是下一句的主语，那么在表达“为了创造”的意思时，就应该使用不定式复合结构作为副词，不要使用“to make”的句型。晶体管要正常工作，必须在电极上加上适当的电压。for a

7、transistor to function normally，it is necessary to apply proper voltages to its electrodes(通常为to make a transistor function normallythe velocity of light is too great for us to measure in simple units，第一章，撰写科技英语短文牙齿运动的电子形成电流。these moving electrons form the current电阻率越高，设置给定电流密度所需的电场就越强。The greater t

8、he resistivity，the greater the electric field needed to establish a given current density，在导体中携带电荷的自由电子对热传导也起着重要作用。使用the free electrons in a conductor carrying charge also play an important role in the conduction of heat公式表示，电压、电流和电阻之间的关系可以用UIR书写。Expressed in a formula、the relationship between volta

9、ge、current and resistance can be written as uir铜是良好的导体，因此广泛应用于传记工程。being a good conductor of electricity，copperis widely used in electrical engineering，第一章技术英语短文编写，电流通过电路时需要损失部分能量。如果已知有电流和电阻的电流，则可以获取电压，即“电流通过a电路”(Flowing through a circuit，the current will lose part of its energy)。获得Given(或Knowing) c

10、urrent and resistance，we can find out voltage初始条件后，我们接下来必须理解这些网络微分方程。having obtained the initial conditions，we go on to solve the network differential equations，第一章技术英语短文编写，脉冲输入发生了所有状态变化。如果把all state changes take place following the occurrence of a pulse input水平地板当作重物走，你就没有工作了。if you walk along a ho

11、rizontal floor carrying a weight，no work will be done方程(5)可以用拉普拉斯变换解。equation(5)may be solved using the la place transformation，第一章科技英语短文本写电流发生变化时，磁场也发生变化。This current changing，the magnetic field will change as well电子与原子核一样大，直径约为10-12厘米。an electron is about as large as a nucleus，its diameter being a

12、bout 10-12cm，第一章技术英语短文写作，4With结构所谓的“With结构”是分词(短语)写作重点放在文章的开头，说明条件、时间和原因。在文章末尾注明额外的说明、方法和条件。对于基极接地，Q4是高阻抗。With its base grounded，Q4 is a very high impedance基准电压为零时，电晶体Q1牙齿关闭。With its base voltage 0，transistor Ql will be cut off，第一章技术英语短文写作，(2)属性。上面有按钮的设备就是键盘。the device with buttons on it is a keyboa

13、rd这是右等于0的不等式，this is an inequality with zero on the right，第一章科技英语短文写作，3，动名词写作重点是介词宾语(特别是be“selecting a desired signal is only one of three important functions performed by the tuning circuit(如果牙齿句子用作动名词短语的主语)”。)比特可以转换为动能。potential energy is capable of being changed into kinetic energy，第一章科技英语短文写作另外，

14、必须理解以下几点：1表示原因的连词通常有以下几种。表示原因的语调在强强有力的强弱中有微弱的排列。(第一章科技英语短文本写作，(1)because(in that):它表示的原因构成了句子最重要的部分，从句经常放在主句之后A rotating body possesses kinetic energy because its constitues(2)since(在that):它表示的原因已经为人所知，或比句子的其他部分重要。它比as更正式一些，从属节一般放在主句的前面(科学技术文也经常放在主句的后面)。Since k and m are both constants，the ratio km

15、is constant是k和m牙齿都是常量，因此km比率是常量。第一章科技英语短文写作，(3)as(now that):其用法类似于since，寺庙一般在周口前面。As air has weight，it exerts force on any object immersed in it空气有重量，必须对其中的所有物体施加力。now that We have discussed the meaning of a graphical solution of a system of simultaneous equations and the method of plotting a line，We are in a pootting a line，第一章科技英语短文写作，(4)for:它引用的文章使人认为所叙述的理由只是补充说明。那是对等连接词。引用的句子是并列的，不是副词子句，只能放在前面的句子后面。有时候一个人说一句话。in previous chapters we did not use the trigonometric，inverse trigonometric，