清影5127
从单个词来说,有 名词(名词的数和名词的所有格),代词(人称代词、物主代词、反身代词、相互代词、指示代词、疑问代词、连接代词、不定代词、关系代词),数词(基数词、序数词、分数、倍数、小数、百分数),冠词(不定冠词、定冠词、零冠词),介词、形容词和副词(比较级和最高级),连词(并列连词、从属连词),动词(谓语动词、非谓语动词、情态动词)。从句子的角度来说,有 句子的成分(主语、谓语、宾语、联系动词、表语、宾语补足语、状语、定语等),句子的结构(简单句、并列句和复合句,复合句里进一步划分为宾语从句、状语从句、定语从句、主语从句、同位语从句),句子的种类(陈述句、疑问句、祈使句、感叹句),还有一些细节方面需要特别注意的,如主谓一致原则、直接引语和间接引语、强调句、倒装句、独立主格结构等。从整体语言环境上说,要注意时态 (主要有16种:一般现在时、一般过去时、一般将来时、现在进行时、过去进行时、将来进行时、过去将来时、现在完成时、过去完成时、将来完成时、现在完成进行时、过去完成进行时、过去将来进行时、过去将来完成时、将来完成进行时、过去将来完成进行时),语态(主动语态、被动语态),语气(主要辨别虚拟语气)。
深海R蔚蓝
以下翻译请楼主审阅,其中有几处打字有点问题(如7ow),只能尽力理解翻译3. Results and discussion3.结果和讨论 3.1. Pressure drop 3.1 压力降In literature the pressure drop data were frequently reported as the Z-factor, which was deBned as the ratioof PPSM=PPEM, where PPSM and PPEM are the pressure drops for static mixer and that for the empty tube, respectively (Boss & Czaskiewicz, 1982). 在文献中,压力降数据常常被报道为Z因子,它被定义为PPSM=PPEM的比率,这里PPSM和PPEM分别为静态混合器的压力降和空管的压力降(Boss&Czaskiewicz,1982)。These values are based on the same ReEM, the Reynolds number for the empty tube, which is deBned as ReEM =Du=. Where D; u and are the tube diameter, the mean 7ow velocity, and the kinematic viscosity, respectively. 这些值都基于相同的ReEM,即空管的雷诺数,它被定义为ReEM=Du=。这里,D,u,和分别为管的直径,平均7ow速度和运动粘度。Fig. 2 depicts the Z-factor for the present mixer based on the pressure drop data measured herein. 图2描述本混合器基于如此测得的压力降数据的Z因子。The laminar-turbulent transition could be located at approximately of Re=150, which correlates with Paul and Muschelknautz (1982).层流-湍流转变可以位于大约Re=150处,这与Paul 和Muschelknauts(1982)相关。 Such an observation suggests that the static mixer could initiate early transition to turbulence compared with the case of the empty tube (2,100–4,000).这样的观察结果表明,相比于空管的情况而言,静态混合器能够促发向湍流的早期转换In pertinent literature some correlations for the Z-factor for the Kenics mixer are available, like Grace (1971); Chen (1973); Wilkinson and Cli? (1977); Paul and Muschelknautz (1982); and Heywood, Viney, and Stewart( 1984), mostof which are based on mixers of respect ratios exceeding unity. 在相关的文献中可以得到有关Kenics混合器Z因子的某些相互关系,例如:Grace (1971); Chen (1973); Wilkinson and Cli? (1977); Paul and Muschelknautz (1982); and Heywood, Viney, and Stewart( 1984), 它们大多数都以幅面比超过1的混合器为基础。For the comparison’s purpose, only the correlation of Paul and Muschelknautz (1982) for laminar 7ow is depicted as arrow in Fig. 2. The agreement is satisfactory.为了比较起见,只有Paul和Muschelknautz (1982)关于层流7ow的相互关系被作为箭头在图2中做了描述。一致性是令人满意的。
cdzsmz5288
任何一本全英的语法书后面都有个Index就足够了!因为,英语语法不可能用汉字玩儿明白!可以参考:Carter, R., & McCarthy, M. (2006). Cambridge Grammar of English: a Comprehensive Guide: Spoken and Written English Grammar and Usage. Cambridge England; New York, NY: Cambridge University Press.Murphy, R., Craven, M., & Viney, B. (2004). English Grammar in Use: a Self-Study Reference and Practice Book for Intermediate Students of English: with Answers. Cambridge: Cambridge University Press.Leech, G. N., & Svartvik, J. (2002-1975). A Communicative Grammar of English (3rd ed.). New York, NY; London, UK; Harlow, UK: Longman.等等都可以。
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