科技英语翻译ppt-3.ppt

Prepositions I. Special uses of some prepositions 1. of (1) of+nouns=adjectives (2) of+noun/noun phrase=within a certain range 在该实验室里的所有计算机中，这一台性能最好。 Of all the computers in this laboratory, this one works best. (3) the part after “of” is in apposition to the part before “of” 那个较轻的机器零件的质量为7公斤。 The lighter machine part has a mass of 7kg. (4) “of” is used in noun phrases (Nouns come from vi.) 图2画出了输出随输入的变化情况。 Fig. 2 shows the variation of the output with the input. (5) “of” is used in noun phrases (Nouns come from vt.) 一个力可以分解成x分量和y分量。 The resolution of a force into x- and y- components is possible. 2. with (1) with + abstract nouns with care / with accuracy (2) “with construction” as a post modifier 具有五个部件的机器 a device with five parts (3) “with construction” as adverbials 有了雷达，我们就能看到远处的物体。 With radar, we can see distant objects. 3. by (1) 根据式(3), 我们可以得到以下的表达式。 By Equation (3)，we can obtain the following expression. (2) by doing sth. 4. for (1) “for” introduces the adverbial of condition 若x1，则该式不成立。 For x1，this equation does not hold. 当n=1时，这个因子等于1. For n=1, this factor equals unity. (2) “for” is used after such nouns as method, technique, equation, algorithm, condition, requirement, etc. 5. in (1) “in” is used before a noun that represents unit 这里t 的度量单位为秒。 Here t is measured in seconds. (2) in quality / in size 这些设备的体积各不相同。 These devices differ greatly in size. (3) in our discussion / in analyzing the data * * 介词 科技英语翻译