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在科技文章中我们常常碰到内容的分类,上期阅读材料就讲到齿轮的分类: Gears fall into several categories; the first is gears that connect parallel shafts... The second category concerns gears that connect shafts at any angle... 我们在阅读有关分类的材料时,应当注意下面几点。 1.表达分类的语言手段多数情况下,在讲述分类时总有一个提示分类的句子。这类句子的主要形式是: There are... types/kinds/categories/groups/varieties/grades of...
In scientific articles we often encounter the classification of content, the last reading of the material on the gear classification: Gears fall into several categories; the first is gears that connect parallel shafts ... The second category concerns gears that connect shafts at any angle When we read about the classification of materials, we should pay attention to the following points. 1. Language means to classify In most cases, there is always a sentence to suggest classification when telling classification. The main forms of such sentences are: There are ... types / kinds / categories / groups / varieties / grades of ...