单词：rapid machining steel
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Universal Instrument traces its roots to the Universal Instruments and Metal Company, a safety pin manufacturer founded in 1919. Through time, the company discontinued safety pin production and made a transition to a machining and tool and die busine
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TED公开课:吃吧
金属切削 metal cutting 机床 machine tool 金属工艺学 technology of metals 刀具 cutter 电路 circuit 半导体元件 semiconductor element 反馈 feedback 发生器 generator 直流电源
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其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so是副词，只能修饰形容词或副 词。so 还可与表示数量的形容词many，few，much， little连用，形成固定搭配。 so + adj. suc
英文语法词汇
其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so是副词，只能修饰形容词或副 词。so 还可与表示数量的形容词many，few，much，
英文语法词汇
Population Growth The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward infinity and doom. On the contrary, demographic history offers evidence that population growth has not b
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A: And therefore, global warming is the greatest de- ception of the early 21st century. Questions? B: Uh yeah. In the lecture you said there s more evidence in the scientific record supporting global cooling? A: Well, yes, essentially, the historical
英语播客-EnglishPod
Study the table A: Study the following table carefully and write an essay of at least 150 words. B: Your essay must be written on Answer Sheet. C: Your essay should meet the requirements below. 1. Changes in peoples daily expenses in the past five ye
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