单词：overhang type centrifuge
单词：overhang type centrifuge 相关文章
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Lesson 38 Text A Can't She Type? The well-known banker, T. J. Ellington, was at one time in his younger days the manager of a New York office. His secretary had been with him for many years, and knew
初级口语教程
初级公司英语会话Lession9:产品销售报告 Listen to the dialogue between company president (CP) and project manager (PM) CP: So how have you broken the information down? PM: Each individual product is listed twice-once in its product category and once a
初级公司英语会话
Smartphone App Helps Snakebite Victims Scientists in Denmark have developed a venom test kit to help doctors treat victims of snake bites. The kit was created to be simple and has only two pieces of equipment: a centrifuge and a smartphone. 丹麦科学
2018年VOA慢速英语(二)月
By Jeff Swicord Washington 05 July 2007 As energy prices continue to rise, more and more housing consumers in the U.S. are looking for ways to save money on home energy costs. VOA's Jeff Swicord reports on an environmentally friendly, green building
2007年VOA标准英语（七月）