【正文】
21. instantaneous center method/instant center method(瞬心法 /即時瞬心法) 22. inertiaforce analysis of mechanisms and machines(機(jī)構(gòu)和機(jī)器的慣性力分析) 23. one and the same coordinate system /inertia frame of reference(慣性參考系) 24. systematic design of mechanisms(機(jī)械設(shè)計 的系統(tǒng) ) 25. camcontour dimensions/camfollower diameters(凸輪輪廓尺寸 /凸輪從動件直徑) 26. disk or plate translating (twodimensional or planar) 盤形傳動凸輪(兩維的,即平面的) 27. cylindrical (threedimensional or spatial) cams 圓柱形凸輪(三維的,即空間的)機(jī)構(gòu) 28. a radial (inline) translating roller follower 一個對心直動滾子從動件 29. a constant angular velocity ratio 旋轉(zhuǎn)角速度的比例 30. a constant torque ratio 一個恒轉(zhuǎn)矩比 31. Nonlinear angular velocity ratios 非線性角速度比率 32. the parallel helical gear 平行斜齒輪 33. the crossed helical gear 交叉斜齒輪 34. the straight bevel gear 直錐齒輪 35. the spiral bevel gear 弧齒錐齒輪 36. the skew bevel gear 大角度斜交錐齒輪 37. the hexagon head screws 六角頭螺釘 38. the fillister head screws 槽頭螺釘 39. the flat head screws 平頭螺釘 40. the hexagon socket head screws 內(nèi)六角沉頭螺釘。 41. the external tensile load 外部拉伸載荷 42. the external shear load 外部剪切負(fù)荷 43. The singlerow deepgroove bearing 單列深溝軸承 44. The angularcontact bearing 角接觸軸承 45. the selfaligning bearings 自動調(diào)心軸承 46. the straight roller bearings 直滾子軸承 47. the sphericalroller thrust bearing 球形輥止推軸承 48. the tapered roller bearings 圓錐滾子軸承 49. the condition of statical equilibrium 淺析條件下平衡 50. the positivecontact clutches 強(qiáng)制接觸離合器 51. the overloadrelease clutches 超載釋放保護(hù)離合器 52. the overrunning clutches 超越離合器 53. the magic fluid clutches 磁流變離合器 54. the metal removal rate 金屬去除率 55. the universal threadgrinding machine 通用螺紋磨床 56. the straightness of machine tool slideways 機(jī)床工具導(dǎo)軌的直線度 57. The adhesive property of oil 潤滑油的粘度 58. the singlepoint cutting tools 單點切削工具 59. the multipoint cutting tools 多點切削工具 60. the randompoint cutting tool 任意點切削工具 61. tracing and duplicating lathes 仿形車床 62. singlespindle automatic lathes 單軸自動車床 63. multispindle automatic lathes 多軸自動車床 64. the gearcutting machine 齒輪切削機(jī)床 65. the special metal removal methods 特種加工 66. the electrical discharge machining 電火花加工 67. the operating mechanisms of the shaper 牛頭刨床的操作機(jī)構(gòu) 68. the mechanically driven shaper 機(jī)械傳動牛頭刨床 69. the infinitely variable cutting speeds 平滑調(diào)整切削速度 70. the upright drilling machines 立式鉆床 71. the radial drilling machines 搖臂鉆床 72. the plain radial drilling machines 平面 搖臂鉆床 73. the multispindle drilling machine 多軸鉆床 74. the telescoping splined shaft 花鍵軸的伸縮 75. an knee and column type of milling machine 銑床的升降臺式 76. Fixedbed milling machines 固定床銑床 77. the hardened tool steel 淬硬工具鋼 78. a cylindrical grinding machine 外圓磨床 79. the new materialremoval methods 新型材料去除工 藝 四.翻譯下列句子 1. The simplest closedloop linkage is the fourbar linkage, which has three moving links (plus one fixed link) and four pin joints.( 最簡單的封閉式的連桿機(jī)構(gòu)就是四桿機(jī)構(gòu),四桿機(jī)構(gòu)有三個運動構(gòu)件(加上一個固定構(gòu)件)并且有四個銷軸。 ) 2. Although the fourbar linkage and slidercrank mechanism are very useful and found in thousands of applications, we can see that these linkages have limited performance level.( 雖然四桿機(jī)構(gòu)和曲柄滑塊機(jī)構(gòu)是非常有用而且在成千上萬的應(yīng)用中都可找到。但是我們還看到,這些連桿機(jī)構(gòu)其性能水平的發(fā)揮已經(jīng)受到限制。 ) 3. The process of drawing kinematic diagrams and determining degrees of freedom of mechanisms are the first steps in both the kinematic analysis and synthesis process.( 畫運動圖和確定機(jī)構(gòu)自由度的過程,就是運動分析和綜合過程的第一個階段。 ) 4. The ability to visualize relative motion, to reason why a mechanism is designed the way it is, and the ability to improve on a particular design are marks of a successful kinematician.( 設(shè)想相對運動的能力,能推想出之所以這樣設(shè)計一個機(jī)構(gòu)的原因和對一個具體設(shè)計進(jìn)行改進(jìn)的能力是一個成功的機(jī)構(gòu)學(xué)家的標(biāo)志。 ) 5. Kinematic inversion is the process of fixing different links of a chain to create different mechanisms.(這個過程的動態(tài)反演是固定的 ,不同的連接創(chuàng)造出不同的機(jī)制 。) are three customary tasks for kinematic synthesis: function generation, path generation and motion generation.( 對于運功的綜合,慣例上 有三個任務(wù) :函數(shù) 的生成 、軌跡生成和運動生成 。) 1. Although a cam and follower may be designed for motion, path, or function generation, the majority of applications utilize the cam and follower for function generation. 雖然可以把凸輪和它的從動件設(shè)計為用于運動變換,路徑變換或者函數(shù)變換,但大多數(shù)用途是利用凸輪和它的從動件做函數(shù)變換。 2. In the case of a disk cam with a radial (inline) translating roller follower the smallest circle that can be drawn tangent to the cam surface and concentric with the camshaft is the base circle. 對于一個對心直動滾子從動件盤形凸輪,可畫出的與凸輪表面相切且與輪軸同心的最小圓是基圓 譯文 P40 [1] 3. Numerous applications in automatic machinery require intermittent motion. A typical example will call for a risedwellreturn and perhaps another dwell period of a specified number of degrees each, together with a required follower displacement measured in centimeters or degrees. 在自動化機(jī)械中的許多應(yīng)用需要間歇運動。一個典型的例子將要求一個含有上升一停歇一返回和可能另一個停歇的周期,每階段經(jīng)過一個指定的角度,伴隨著一個所要求的從動件的位移,這個位移以厘米或度來度量。 譯文 P40 [2] 4. Any two mating tooth profiles that satisfy the fundamental law of gearing are called conjugate profiles. 任何滿足齒輪傳動基本定律的一對相互嚙合齒廓稱之為共軛齒廓。 5. Although there are many tooth shapes possible in which a mating tooth could be designed to satisfy the fundamental law, only two are in general use: the cycloidal and involute profiles. 雖然可以設(shè)計出有很多 齒廓來滿足傳動裝置的基本定律,但通常所使用的只有兩種:即擺線齒廓和漸開線齒廓。 6. Typical methods of fastening and joining parts include the use of such items as bolts, nuts, cap screws, setscrews, rivets, locking devices and keys. 緊固和聯(lián)結(jié)零部件的典型方法包含使用這些零件:螺栓,螺母,有頭螺釘、定位螺釘,鉚釘,鎖緊裝置和鍵。 7. Methods of joining parts are extremely important in the engineering of a quality design, and it is necessary to have a thorough understanding of the performance of fasteners and joints under all conditions of use and design. 在質(zhì)量設(shè)計工程中,聯(lián)結(jié)零部件的方法非常重要,因此,徹底了解緊固零件和聯(lián)結(jié)零件在所有使用和設(shè)計條件下的性能是非常必要的。 8. When a connection is desired which can be disassembled without destructing the parts assembled and which is strong enough to resist