电气专业英语2.ppt
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1、电气工程专业英语实用教程清华大学出版社清华大学出版社清华大学出版社清华大学出版社 祝晓东祝晓东张强华张强华古绪满古绪满 编著编著Unit 2Unit 2 Electric Basic Concept Electric Basic Concept Electric Basic Concept Electric Basic Concept 退出退出New Words And Phrases atom 5AtEm n.原子neutral state 中性状态,orbit 5C:bIt n.轨道;轨迹designate 5dezineit vt.指定(出示),标明nucleus 5nju:kliEs
2、n.核子cubic 5kju:bik adj.立方体的,立方的proton 5prEutCn n.质子force out 挤(出去),冲(出去)abbreviate E5bri:vieit vt.节略,省略,缩写 excess ik5ses n.过度,多余,超过,超额adj.过度的,额外的New Words And Phrases conventional kEn5venFEnl adj.惯例的,常规的,习俗的,传统的gravity 5rAviti n.地心引力,重力charge tFB:dV n.负荷,电荷,费用,充电negative charge 负电荷positive charge 正电
3、荷absence 5AbsEns n.缺乏,没有remain ri5mein vi.剩余,残存attraction E5trAkFEn n.吸引,吸引力,repulsion ri5pQlFEn n.排斥New Words And Phrases electric field 电场repel ri5pel vt.排斥represent 7ri:pri5zent vt.表示,表现free electron 自由电子symbol 5simbEl n.符号,记号rate reit n.比率,速度,等级determine di5tE:min v.决定,确定,测定cross-section 截面,断面ex
4、ponent eks5pEunEnt n.指数,幂unimaginably 7Qni5mAdVinEbl adj.不能想象的,难以理解的New Words And Phrases concern with 使关心current flow 电流measurement 5meVEmEnt n.度量,测量法prefix5pri:fiks n.前缀distinguish dis5tiNwiF v.区别,辨别ignore i5nC:vt.忽略,不理睬,忽视electrochemical I9lektrEJkemIkEl adj.电气化学的alternator 5C:ltE(:)neitE n.交流发电机
5、generator 5dVenEreitE n.发电机New Words And Phrases magnetic magnetic adj.磁的,有磁性的,有吸引力的deficiency di5fiFEnsi n.缺乏,不足potential pE5tenF(E)l adj.势的,位的utilize ju:5tIlaIz vt.利用terminal 5tE:minl n.终端,接线端,电路接头 characteristic 7kAriktE5ristik adj.特 有 的,典 型 的 n.特 性,特征shortage 5FC:tidV n.不足,缺乏 New Words And Phras
6、es symbolically sim5bClikli adv.象征性地kilovolt 5kilEuvEult n.千伏特millivolt millivolt n.毫伏(特)(=1/1000伏(特),略作mV或mv)microvolt 7maikrEu5vEult n.微伏(等于1伏特的百万分之一)Text请老师朗读并讲解课文请老师朗读并讲解课文Notes 1 Elements are often identified by the number of electrons in orbit around the nucleus of the atoms making up the elem
7、ent and by the number of protons in the nucleus.本句中,介词by的宾语由两部分组成,一个是the number of electrons in orbit around the nucleus of the atoms making up the element,一个是the number of protons in the nucleus。第一个宾语中,making up the element修饰atoms,介词短语in orbit around nucleus of atoms做定语,修饰 electrons。be identified b
8、y是“通过鉴别”、“识别”的意思。元素是通过组成该原子的核子轨道上的电子数及核子中的质子数来区分的。Notes 2 Electrons which are forced out of their orbits can result in a lack of electrons where they leave and an excess of electrons where they come to rest本句中的主语是electrons,谓语是can result in,a lack of electrons where they leave and an excess of electr
9、ons where they come to rest是宾语。这个宾语由and连接的名词短语a lack of electrons以及an excess of electrons组成,两个where引导地点状语,在理解时要分清这里面的层次。由于电子从轨道移走而造成该原子缺少电子,而移入电子的原子电子过剩。使由于质子数多余电子数,缺少电子的成为正电荷。Notes 3 Trying to measure even small values of current would result in unimaginably large numbers.本句的主语是一个动名词短语trying to mea
10、sure even small values of current,谓语是动词词组result in,result in不能机械地理解为“导致”,因为“导致”带有明显的感情色彩,理解为“造成”更顺畅。试图测量电流微小的值将产生难以想象的巨大的数字。Notes 4 They will always be attracted from a source having an excess of electrons,thus having a negative charge,to a source having a deficiency of electrons which has a positiv
11、e charge.本句的主干是they will always be attracted fromto。having an excess of the electrons,thus having a negative charge两个定语修饰的是第一个source。having a deficiency of electrons which has a positive charge修饰的是第二个source。第二个修饰语虽然没有明显表达出两个定语之间的逻辑关系,但是从第一个修饰语中两个定语用thus连接可以判断出,它们仍然有因果关系:因为带有正电荷,才造成电子缺乏。所以在理解时要注意这层意思
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