essential的例句大全

In this paper a study of the composition of coriander seed essential oil prepared by steam distillation and supercritical CO_2 fluid extraction was made by means of GC and GC-MS.

本文采用GC和GC-MS技术对芫荽子超临界CO2流体萃取（SFE-CO2）精油的化学成分进行了剖析，并与水汽蒸馏（SD）精油作了比较。

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The former play an extension of the political functions role and are not-for-profit service supplies. The former whose essential feature is sociality belongs to Special Corporation and its operation is normally interfered by the government.

前者发挥着政治功能的延伸作用，不以营利为最终追求，社会性是其本质所在，在根本上属于特殊法人，无法做到政企的绝对分开，其运作必然受到政府一定程度的干预。

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The Requirement of Red Sea Bream for Protein and Essential Amino Acids

真鲷对蛋白质和必需氨基酸需要量的研究

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In the primary structure of stem, the essential oil was mainly distributed in cortex parenchyma cells;

在茎的初生结构中，挥发油主要分布在皮层薄壁组织细胞中；

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He is really the essential person to bring to justice in the context of the war in Bosnia.

他确实是波斯尼亚战争中应该被绳之以法的一个重要人物。

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In the secondary structure of stem, the essential oil was mainly distributed in remaining cortex parenchyma cell.

在茎的次生结构中，挥发油则主要分布在残存的皮层薄壁组织细胞中。

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On brotherliness and friendship Honesty and brotherliness are the key characters of the Socialist Harmonious Society. To establish a harmonious society, it is essential to strengthen the consciousness of honesty of the whole society.

诚信友爱是社会主义和谐社会的重要特征，建设和谐社会必然要求增强全社会的诚信意识。

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Sugarcane is the most important sugar crop worldwide, breeding of new varieties is essential for the development of sugar industry.

甘蔗是世界主要糖料作物，甘蔗新品种选育对蔗糖业发展具有重要意义。

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The change of rice cropping systems alters the environmental conditions essential to the multiplication and survival of rice stem borers, resulting in a conspicuous difference in the annual number of generations, the temporal position of the population peaks and the degree of infestation.

水稻栽培制度的变革，改变了稻螟赖以生存的环境条件，导致二、三化螟的发生世代、发生型和为害程度发生了深刻的变化。

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In video communication, to transfer a video sequence over limited channel bandwidth, effective video compression is essential.

在视频通信中，为了在有限的信道带宽上传输视频，需要首先对原始视频信号进行有效的压缩。

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Firstly the essential stereoscopic theories such as the formation of stereoscopic perception are introduced in detail, and several binocular projection models to calculate stereo pairs are given.

该文主要从以下几个方面对相关技术进行研究：首先对立体视觉原理深入研究，得出了用于左右影像对计算的双目投影数学模型，并论述了不同模型的优缺点。

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Beginning in1991, my colleagues and I had the privilege of working with structural biologists and medicinal chemists to test small chemicals that might intercalate into the catalytic site of the HIV protease, an enzyme essential for the production of infectious progeny virus.

从1991年开始，我的同事和我有幸与结构生物学家和医学化学家合作，对有可能阻隔艾滋病毒蛋白酶的触媒点的微型化学药物进行测试，这种蛋白酶是繁殖传染性病毒的必要酵素。

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Supercritical carbon dioxide extraction of bergamot essential oil and its components

超临界流体萃取佛手挥发油的气相色谱/质谱分析

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A higher humidity can benefit your budgerigar, but is not essential.

较高的湿度可以受益的虎皮鹦鹉，但不是必不可少的。

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Study on the extract technology of bergamot essential oil by water vapor distillation

水蒸气蒸馏法提取佛手挥发油的工艺研究

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The study on the technology and kinetics of chlorination of benzyl chloride is rather essential to the design of reactive distillation column in that the new technology about combination of reaction and distillation is used in the production of benzal chloride.

因为拟采用新型反应精馏耦合技术进行苄叉二氯的生产，研究氯化苄氯化工艺和动力学对于反应精馏塔的设计很有必要。

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Sufferers typically cut out entire food groups-often in the mistaken belief they are unhealthy or their bodies are intolerant to them-thereby depriving themselves of essential nutrition and vitamins.

“完美食欲症”患者经常会选择放弃整类食物---错误地认为这类食物不健康，或者自己的身体不耐受，因此身体就会缺乏必须的营养和维生素。

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While it is of course the perfect choice for jazz, funk, fusion and R& B, this KONTAKT instrument is also versatile enough for any production where authentic electric piano sound is essential.

虽然它当然是爵士乐，放克，融合和R&B的最佳选择，这康塔克特文书也是多才多艺的任何地方生产正宗的电钢琴的声音是必不可少不够。

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On basis of the development of modern control technology and apply of the network technology and locale bus-mastering technology, this text analyzes the essential element for produce downcoiler system: principle of assign for speed;

基于现代控制技术的发展、网络技术以及现场总线技术的引用，本文分析了地下卷取机系统的基本要素：速度的分配原则；

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The compositions and functions of cumin essential oil have been extensively investigated at home and abroad.

孜然粉或孜然精油被广泛的应用于传统的营养学、医学中。

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