机电英语Unit.ppt

Task 2 The following things are what Steven usually does for designing a product. Arrange them in the order of time and explain. Language Points Translation 1. Jeff David / Giant Bicycles Co., Ltd. / George Bishop / electric scooter / concept color renderings 2. Fang Dawei / Galanz Electrical Equipment Co., Ltd. / Susan Bird / gas compressor / concept sketches 3. Joan Robinson / TA Industrial Design Company / Pat Jordan / extrusion mold / 2D graphic design Task 2 Work in pairs. Jeff David is working in Cesaroni Design Co., Ltd. He is now talking with George Bishop about his requirements for the design of electric scooter. Practice making a conversation. You may use the phrases or expressions listed below. George Bishop ● Ask about the appearance. ● Want to know about the speed. ● Enquire about weight. ● Wonder whether there is any other information. ● Show your satisfaction. Jeff David ● Bright orange color; 34 inches long, 7 inches wide, and 35 inches from deck to handlebars; tough, aluminum body. ● 15 miles per hour at most ● Light enough to be carried into the office; 19.5 pounds in weight; easy to fold up. ● Low deck height; easy kick scooting; completely redesigned motor controller; improved performance. The gear reducer arrangement also creates greater stability (it’s a balanced system) and increased rotational stiffness. However, the planetary arrangement has disadvantages. The design is complex and the use of it is too much trouble, for example. In the drawing below, the Fixed Axis Gear System is the traditional arrangement where a pinion is driving one large gear on a parallel shaft. In the Planetary Gear System arrangement, one or more gears (planet gears) surround the pinion (sun gear). Obviously, the Planetary Gear System works better than the fixed Axis Gear System due to its increased number of gear contacts. Paragraph 1 A. one advantage of the gear reducer Paragraph