- 1、本文档共243页,可阅读全部内容。
- 2、原创力文档(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
Look and Study Dialogue Reading Further Study 12 4 Words and Phrases A. Look up the words and phrases below in a dictionary. Fill in the blanks with both Chinese and English answers according to the pictures. wave; charger; rectifier; PCB; oscilloscope; signal 1._______________ 2._______________ 3._______________ charger 充电器 PCB 印刷电路板 oscilloscope 示波器 Look and Study Dialogue Reading Further Study 12 4 Words and Phrases A. Look up the words and phrases below in a dictionary. Fill in the blanks with both Chinese and English answers according to the pictures. wave; charger; rectifier; PCB; oscilloscope; signal 4._______________ 5._______________ 6._______________ 4. rectifier整流器; 5. signal信号; 6. wave波 rectifier整流器 rectifier 整流器 signal 信号 wave 波 Look and Study Dialogue Reading Further Study 7 4 Words and Phrases Jane(A)看到Peter(B)正在研究一个充电器的电路图,于是提出了几个问题。 A: Peter, here is a battery charger circuit diagram. What’s the component in square c5? B: That’s a transformer, John. A: Oh, I see. What will you do with the diagram, a PCB? B: No. My boss only wants me to test the battery charger with an oscilloscope. A: I’m not quite sure where to test it. B: At points A, B and C. A: What’s the component in square D5? B: That’s a full-wave bridge rectifier. 12 Look and Study Dialogue Reading Further Study 7 4 Words and Phrases A. Listen to the dialogue and circle Yes or No. 1. Peter wants to make a battery charger. Yes No 2. John tests the battery charger with an oscilloscope. Yes No 3. Peter and John are studying a wiring diagram. Yes No 12 No No No Look and Study Dialogue Reading Further Study 7 4 Words and Phrases B. Reorder the letters with your partner. 12 Letters Words u sq are ? dge bri ? oscillo scope ? square bridge oscilloscope Look and Study Dialogue Reading Further Study 7 4 Words and Phrases 使用示波器 An oscilloscope is a type of electronic test instrument that allows observation of constantly varying signal voltages, usual
文档评论(0)