【文章內(nèi)容簡(jiǎn)介】 . 承蒙日本東京工商業(yè)協(xié)會(huì)告知貴公司名稱，并獲悉貴公司生產(chǎn)紡織品、布品以及其它一般性商品，同時(shí)兼做進(jìn)出口生意。 ? 5. 我們是倫敦的一家進(jìn)出口公司，主要經(jīng)營(yíng)各種機(jī)械設(shè)備，已有大約 40年的商貿(mào)歷史。 ? 6. 公司是中國(guó)最大的食品貿(mào)易公司，在中國(guó)各主要城鎮(zhèn)都有分公司及門市部。 ? 7. 很高興回復(fù)您對(duì)三輪車資料的詢函。 ? 8. 茲回復(fù)貴公司 2月 15日來(lái)函，隨函附上本公司最新價(jià)目表，以資參考。 ? 9. 請(qǐng)惠告商品詳情，包括產(chǎn)品尺寸、顏色、價(jià)格，并附上不同質(zhì)地材料的樣本。 ? 10. 隨函附上公司概況、業(yè)務(wù)范圍和其它方面的小冊(cè)子一本，以資參考。 Unit Three Text The Power Mechanism of the Engine ? 一 ． Focal Words and Expressions ? crankshaft and connecting rod assembly crankcase ? cylinder block piston flywheel ? thermal energy mechanical energy alloy iron ? piston head piston ring piston land ? piston skirt piston pin hole flat ? concave convex turbulence ? ring groove pression ring oilcontrol ring ? connecting rod small end connecting rod big end connecting rod shank ? connecting rod cap connecting rod bearing half shell ? Icross section bushing main bearing journal ? rod journal crank arm bearing ? counterbalanced weight flywheel end ? 二 ． Focal Functions and Patterns ? 1. adj. + enough to do sth. ? eg. 1\ He is old enough to go to school. 他到了上學(xué)的年紀(jì) 。 ? 2\This book is small enough to go in my pocket. 這本書很小 ， 足以放進(jìn)我的口袋 。 ? ? 2. prep. + which clauseattributive clause ? eg. 1\ Language is a tool by means of which people municate ideas with each other. ? 語(yǔ)言是人們互相交流思想的工具 。 ? 2\ At the center of an atom is a nucleus, around which electrons revolve. ? 原子的中心是原子核 ， 電子繞原子核旋轉(zhuǎn) 。 ? ? 3. therefore ? eg. 1\ Since you do not know, therefore I shall have to tell you. ? 因?yàn)槟悴恢?， 所以我不得不告訴你 。 ? 2\ The word is an uncountable noun and is used in a general sense, therefore it takes no article. ? 這個(gè)詞是不可數(shù)名詞 ， 又是用于一般意義 ， 所以不要加冠詞 。 Key to the exercises ? Check Your Understanding ? Ⅱ . Choose the correct word to match the sentence ? 1. piston 2. block 3. cylinder ? 5. flywheel 6. crankcase ? 7. pin 8. turbulence ? Ⅲ . Fill in the table below ? English Chinese ? power mechanism 動(dòng)力裝置 ? thermal energy 熱能 ? kiic energy 動(dòng)能 ? piston head 活塞頂部 ? mechanical energy 機(jī)械能 ? connecting rod 連桿 ? heat dam 絕熱槽 ? power stroke 做功行程 ? inertia forces 慣性力 ? piston ring 活塞環(huán) ? Build Up Your Vocabulary ? Ⅰ . Write down the words that the important abbreviation stands for ? 1. digital analog converter ? 2. drive axle ratio ? 3. drawbar horse power ? 4. dual diaphragm distributor ? 5. direct fire unit ? 6. distributor ignition ? 7. doubleoverheadcamshaft (engine) ? 8. diagnostic trouble code ? Ⅱ . Look at the picture and label it correctly using the words given below ? 1. intake stroke 2. pression stroke 3. power stroke 4. exhaust stroke ? 5. bustible mixture 6. intake valve 7. spark plug 8. exhaust valve 9. exhaust gas ? Read carefully the information given below and write a r234。sum234。 for Kang Nali who is applying to study abroad. ? R234。sum234。 ? Ⅰ .Personal Data: Ⅱ .Education: ? 1. Name: Kang Nali 9. 1999～ 2023 Xi’an Jiaotong University ? 2. Address: 404 Building 23 Major in gas dynamics ? Xi’anjiaotong University . degree ? China ～ 1996 Xi’an Jiaotong University ? 3. Birthdate: 1970 Major in internal bustion engine ? . degree ? ? （ to be continued） ? Ⅲ .Experience: ? 4. Bitheplace: Xi’an 11. 2023～ present Associate professor ? the Department of PME,XJU ? 1997～ 2023 Lecturer ? the Department of PME,XJU ? 1996～ 1997 Teaching assistant ? the Department of PME,XJU ? ? 5. Nationality: Chinese 12. 1986～ 1992 Worker ? Xi’an Railway Construction Company ? 6. Maritial Status: Married with a child Ⅳ .Special Training: ? 7. Sex: male 13. 1997 oneyear course in puters ? 8. Interests: Football 14. 1991 3month training class ? Arts to learn to make fans ? Classical music Unit Four Text Valves and valve Train ? 一 ． Focal Words and Expressions ? intake port exhaust port cylinder head ? intake manifold exhaust manifold valve gear ? timing gear