1. 派生：根据构词法中词的转换(conversion),派生(derivation),合成(compounding)来猜测词义.在上精读课时,强化词汇分析技能,使学生掌握基本的构词方法,扩大词缀范围,掌握一些常用的前缀、后缀.

2. derivation的近义词

2. 导出：它的一个同义词是导出(derivation). 演绎是相对于系统的概念,说一个公式(或语句)是演绎的只是相对于一不定的公理和推理规则的具体系统而言的. 演绎概念是证明概念的概括. 一个证明是语句这样的有穷序列:它的每个语句或是公理或是根据推理规则由前面的语句得出的.

1. derivation

1. Lorentz transformation is merly the derivation result of the logical relation among the mathematical symbolscreated by human, and don`t relate to the relation between its concept and an experience object.
    指出洛伦兹变换仅仅是人类创造的数学符号之间的逻辑联系的推演结果，并不涉及所包含的概念与经验客体之间的关系。

2. The first method adopts different kind microbes to ferment buckwheatextraction. The method can increase DCI and its derivation content in buckwheat seed solution, while itreduces sugar content in extraction. The research adopts Saccharomyces cerevisia, Mucor, Bacterium coli, Torulopsis apicola, Aspergillus oryzae Bacillus subtilis, Candida mycoderma, Black mold that inoculate inbuckwheat extraction. Determine content change of various compotent with tracing.
    方法一采用不同种类微生物发酵荞麦提取物，增加荞麦籽粒水溶液中D-手性肌醇及其衍生物的含量，同时减少提取物中总糖含量，本研究采用酿酒酵母、毛霉、大肠杆菌、蜜蜂生球拟酵母、米曲霉、枯草芽孢杆菌、解酯假丝酵母、黑曲霉接种于荞麦提取物中进行培养，并跟踪测定提取物中各种成分的含量变化。

3. derivation的意思

3. We describe the derivation of human iPS cells with the use of nonintegrating episomal vectors.
    接着，研究人员用一种叫做核转染的方法将这些质粒介入到人包皮细胞中。

4. A single-stage high-power-factor converter composed of the buck-boost and flyback converter is investigated in this thesis. The topology derivation, operation principle and design consideration of the considered converter are presented in detail.
    中文摘要本论文研究由降升压式与返驰式转换器合并而成之单级高功因AC/DC电力转换器，此转换器之演化过程、操作原理及元件设计均详细说明。

5. In the case time-varying demand is deterministic and there exist alternative supply source, based on model derivation, this paper firstly obtains analytic models of supplier-buyer parties'optimal shortages times and service level, and analyses local and global optimization of reorder cycle by comparison. The main conclusions are: global optimization of shortages times effectively decreases supply chain inventory cost; global optimization of reorder cycle makes supply chain inventory cost decreasing, and decrease of inventory cost increases with demand time-varying.
    本文首先在确定性时变需求与有替代供应源环境下，基于模型推导得到非合作与合作两种情形下供需双方的最优缺货时点和服务水平的解析模型，同时对补货周期局部优化和整体优化作了对比分析，其主要结论是：缺货时点整体优化能够有效地降低供应链库存成本；补货周期整体优化使供应链库存成本下降，并且库存成本下降额随需求时变性增大而增加；基于库存成本共担机制的缺货时点整体优化既能降低供应链库存成本，又能使供需双方均受益，补货周期整体优化使供应链库存成本下降，并且库存成本下降额随需求时变性增大而增加，但下降比率随需求时变性增大而缩小。

6. During the derivation, it is assumed: the liquid phase is incompressible Newton fluid; there is no mass transfer between phases; it is homothermal and steady state flow; the flow rate of gas phase and that of the liquid phase are the same without the consideration of slippage effect; the density of gas phase and that of the liquid phase in the wellbore are constants; the mixed loss caused by inflow from wellbore is ignored.
    在推导的过程中进行了如下假设：液相为不可压缩的牛顿流体；相间不存在传质；等温、稳态流动；不考虑滑脱效应，气相和液相的流速相同；井筒中气相、液相的密度为常数；忽略井壁入流引起的混合损失。

7. The reason and pattern of affecting recovery heat flux are found out by means of theoretical analysis and mathematical derivation.
    本文经过理论分析和数学推导，并经过反复的实验验证，找出了影响恢复热负荷变化的原因和规律，并提出了改进试验测量方法的措施。

8. But I do not approve of this derivation, which seems to be a little strained.
    我并不赞成这种行化，因为这未免有些牵强附会。

9. The word orphan is a Greek derivation meaning a child who has lost both parents through death.
    孤儿这个词是个古希腊的派生词，意为一个父母双亡的孩子。

10. A simpler derivation of the general form of the regularized solution is also obtained.
    并简单的说明一下正规化通式运算的推衍。

11. Based on the results from an extended derivation of Weibull Model, the methods to predict remaining reserves and reserve-production ratio of oil and gas fields are proposed in t...
      基于威布尔预测模型的扩展推导，提出了预测油气田剩余可采储量和储采比的方法。通过实例应用证明了所提出方法的有效性。

12. And variations in any element of the context may cause the change of semantic features as well as the derivation of the language, and in turn, result in different registers.
      语境成分中任何一项的改变都会引起语义的变化，导致语言的变异，并进而产生不同的语域。

13. derivation的反义词

13. Is a safe, stable and simple, elegant, by C ++ and the derivation of object-oriented programming language.
      NET Framework之上的高级程序设计语言。

14. Morphology: The study of the structure and form of words in language or a language including inflection derivation and the formation of compounds.
      词法，词态学，形态音位学语言或某一语言中对于单词的结构和形式的研究，包括词尾变化、派生和虹羯词的构成

15. Kangarilla Road is the main road running past the vineyard towards the small village of Kangarilla, the name a derivation of the Australian Aboriginal language and refers to the abundance of resources locally.
      袋鼠之路是通往袋鼠山庄的主要通道，其名称源自澳洲当地语言，并引用大量地区性的方言。

16. This process of adding more than one affix to a free morpheme is termed complex derivation.
      这个过程中加入一个以上的词缀一个自由词素称为复杂的推导。

17. A derivation is given showing that Bose-gas in state of aggregation in critical temperature is a phase transition of third order.
      给出了一种可发生凝聚的理想玻色气体，处于临界温度下所发生的相变是三级相变的证明方法。

18. Firstly, the thesis completely analyzed present research conditions domestically and internationally, emphasized on discussing the influence of corrosion of steel on the mechanics function of concrete members, and then put forward to the leading parameter-corrosion rate of steel by analyzing the bearing and derivation of curved pieces., which was thorough studied from the aspect of materials.
      首先对国内外混凝土中钢筋锈蚀问题研究现状作了一个较为全面的分析，着重讨论了钢筋锈蚀对混凝土构件力学性能的影响，然后以钢筋混凝土受弯构件为例，引出影响混凝土构件承载力和变形的控制参数——钢筋锈蚀速度，然后从材料层次对钢筋锈蚀速度作了较深入的研究。

19. Through formula Derivation and Helmholtz reciprocity theorem, devices for parallel beam of P polarized light could be designed.
      借助公式推导法及Helmholtz互易定理，可设计出平行入射P偏振光的光束集束器件。

20. Then its rigorous derivation from electromagnetic boundary conditions, based both on reciprocity theorem and the concept of reaction, is presented.
      极化维是一种重要的空间维资源，只有充分地认识极化域，才可能最大限度地利用空间资源。

1. 起源;由来;(尤指)词源
    The derivation of something, especially a word, is its origin or source.

    e.g. The derivation of its name is obscure...
           其名字的由来鲜为人知。
    e.g. The word is of old French derivation.
           该词源于古法语。

1. the act of deriving something or obtaining something from a source or origin

2. drawing off water from its main channel as for irrigation

3. drawing of fluid or inflammation away from a diseased part of the body

4. inherited properties shared with others of your bloodline

    Synonym: ancestry lineage filiation

5. a line of reasoning that shows how a conclusion follows logically from accepted propositions

6. (historical linguistics) an explanation of the historical origins of a word or phrase

    Synonym: deriving etymologizing

7. the source or origin from which something derives (i.e. comes or issues)

    e.g. he prefers shoes of Italian derivation
           music of Turkish derivation

8. (descriptive linguistics) the process whereby new words are formed from existing words or bases by affixation

    e.g. `singer' from `sing' or `undo' from `do' are examples of derivations