【正文】 II. Text Explanation ? Universal drive normally consists of the universal joints, drive shaft and support . ? 譯文：萬向傳動裝置一般由萬向節(jié)、傳動軸和中間支承三部分組成 。 II. Text Explanation ? When the drive gear axis moves downward, the location of transmission shaft can be reduced, which helps to low the vehicle body and the vehicle’s center of gravity, improving the vehicle stability. ? 譯文：當主動齒輪軸線向下偏移時，可以降低傳動軸的位置，從而有利于降低車身及整車重心高度，提高汽車的行駛穩(wěn)定性 。 2 sun gear。 5idler shaft。 ?V. Translate the following sentences into English. ?1. 經過離合器的動力輸出主要是由與發(fā)動機曲軸相連的一個或多個驅動元件與一個或多個動力輸入軸相連的驅動元件相接觸形成的。 II. Text Explanation Fig. 32 Clutch 1pressure plate。 4 driving wheel。 3universal joint。 ?、動力輸出軸和差速器齒輪軸連接在一起。 加強 ?splined hub 花鍵轂 ?譯文：離合器有一個離合器盤作為主要部件，離合器盤包括一個圓形的金屬盤，它與強化的花鍵轂連接在一起。 3input shaft。 ?2. 變速器中間軸齒輪與主動齒輪是常嚙合的。 ?V. Translate the following sentences into English. ?1. 自動變速器由液力變矩器、行星齒輪機構和液壓操縱機構組成。 5 drive shaft ? III. Read the following passage carefully and fill in the blanks with the proper form of the given words. ? The final drive is used to (transfer) the engine power from the (drive shaft ) to the rear (wheels ). In addition to transferring power, it must cause the power to make a 90176。 2 crossaxis。 ?3. 主減速器是依靠齒數少的齒輪帶動齒數多的齒輪來實現減速的，采用圓錐齒輪傳動則可以改變轉矩旋轉方向。 4ring gear。 II. Text Explanation ? The basic plaary gear set consists of a sun gear, a ring gear and two or more pla gears, all remaining in constant mesh . ? 譯文：基本的行星齒輪裝置由一個太陽輪、一個齒圈和兩個或更多個行星齒輪組成，所有元件之間保持常嚙合狀態(tài) 。 II. Text Explanation ? The gear shift mechanism consists of a lever, shift rails, shift forks, retainers, locks and a reverse speed safety device. ? 譯文：齒輪換擋裝置包括換檔桿、撥叉軸、換檔撥叉、保持架、換檔鎖和倒檔安全裝置 。 ?He was sandwiched between two very fat women on the bus. ?The clutch fork and linkage provide the means of converting the upanddown movement of the clutch pedal to the backandforth movement of the clutch release bearing assembly. ?means [mi:nz]n. 方法 , 手段 ?譯文：離合器分離叉和連接件提供了將離合器踏板的上下運動轉化為離合器分離軸承機構的前后運動的一種方法。 vi. 使 … 旋轉 ?譯文：汽車上需要一個離合器，因為發(fā)動機一直在旋轉，而車輪卻不是（一直旋轉）。 II. Text Explanation ? When the car is on straight road, the ring gear, differential case, differential pinion gears, and two differential side gears all turn as a unit without any relative motion. ? 譯文：汽車在直線行駛時，齒圈、差速器殼、差速器行星齒輪和兩個差速器半軸齒輪作為一個整體運轉，而無任何相對運動 。 II. Text Explanation ? A manual transmission requires a clutch to apply and remove the engine torque to the transmission input shaft. ? 譯文：手動變速器需要用離合器來把發(fā)動機轉矩施加給變速器輸入軸或從變速器輸入軸撤消。s wheels do not. ?spin [spin] vt. amp。 ?To make a ham sandwich you put a slice of ham between two slices of bread. ?在公共汽車上 , 他被擠在兩個胖女人中間。 II. Text Explanation ? The input shaft is made of steel integral with the driving gear and the rim . ? 譯文：輸入軸是鋼制的，與驅動齒輪和齒圈制成一體 。 4plaary carrier ? Automatic transmission is easy to manipulate in a crowded vehicle, they can greatly improve traffic safety and reliability. ? 譯文：自動變速器很容易操縱，在車輛擁擠時，可大大提高車輛行駛的安全性及可靠性 。 3differential housing。 ?2. 目前采用的輪邊減速器，就是為滿足整個傳動系統匹配的需要，而增加的一套降速增扭的齒輪傳動裝置。 3 shaft fork。 (turn ) between the drive shaft and wheels, and provide the (correct ) axle ratio. There is no choice of final drive ratios that gives the “ best” performance at all (speeds ). The gear ratio is (proportional) to ratio of the gear diameters and (nversely) proportional to the ratio of gear speeds. The gear teeth of (driven ) gear are more than the (driving) gear. There are many types of gear shape, but the type of the driving and the driven must be consistent. ?IV. Translate the following sentences into Chinese. ?1. Driven bevel gear is fixed on the differential shell while the differential shell is fixed on the main reducer shell by two tapered roller bearings. ?2. These two bearings installed in the holes of the main reducer bearing shell and was level axial positioned. ?3. The gear ratio is the relationship between the number of teeth on two gears that are meshed or two sprockets connected with a mon roller chain, or the circumferences of two pulleys connected with a drive belt. ?，差速器殼通過兩個圓錐滾子軸承安裝在主減速器殼上。 ?2. 液力變矩器的鎖止離合器位于渦輪前端，由鎖止活塞、減振盤和渦輪傳動板等組成。 ?3. 換檔裝置通過變換齒輪嚙合，實現前進檔、空檔和倒檔之間的變換。 4output shaft。attached to a reinforced splined hub 是過去分詞短語作狀語修飾 metal plate II. Text Explanation ?The splined hub is free to slide lengthwise along the splines of the transmission input shaft. ? lengthwise [’le?θwaiz] adv. 縱長地 , 縱向地 ?譯文：（離合器的）花鍵轂可以沿著變速器輸入軸的花鍵自由滑動。 ?V. Translate the following sentences into English. ?1. 如果快速運轉的發(fā)動機突然與靜止車輛的傳動系相連接，就會產生強烈的沖擊。 4final drive。 3 drive shaft。 ?Somehow we lost our way. ?The clutch（ shown in Fig. 32） allows us to smoothly engage a spinning engine to a nonspinning transmission by controlling the slippage between them. ?slippage [’slipid?] n. 滑動 ?譯文：離合器（圖 32所示）允許我們將旋轉的發(fā)動機和不轉的變速器平穩(wěn)地連接起來，這種連接通過控制它們之間的相對滑動來實現。 ?，這種接合就不會柔和。 ? 4reverse shaft。 II. Text Explanation III. Exercises ? oneway clutch ? throttle valve ? torque converter ? plaary gear ? pump wheel ? fuelefficient ? top gear ? hydraulic control circuit ? clutch pack ? plaary gear set ?單向離合器 ?節(jié)氣門 ?液力變矩器 ?行星齒輪 ?泵輪 ?燃油效率 ?高速檔 ?液壓控制管路 ?離合器壓盤 ?行星齒輪組 ?I. Translate the following expressions into Chinese. III. Exercises ? II. Identify the English names of plaary gear system according to the picture. ? 1 plaary carrier。 II. Text Explanation ? In twostage main reducer, if the secondclass gears are in the vicinity of the wheel, the two wheels are in nature two independent parts known as the wheel reducer. ? 譯文：在雙級式主減速器中，若第二級齒輪在車輪附近，這兩個車輪實際上成了兩個相互獨立的部件，被稱為輪邊減速器