查询词典 essential element

Finite element model of light-weight steel-concrete composite beams are built up. This element model combines spring element with traditional beam element to form a composite beam element which consists of steel, concrete and springs. The three parts has compatibility of deformation.

2建立了轻钢-混凝土组合梁的非线性有限元分析模型，该模型由传统的梁单元中加入弹簧单元，由钢梁部分、混凝土部分和弹簧三部分在变形协调的基础上组成一个复合梁单元。

In this paper, the space-time finite element theory and its application technologies are studied and discussed. Furthermore the space-time finite element method is used to analyze the transient characteristics of electromagnetism equipments. The work is important to develop the numerical method for the transient electromagnetic field. The detailed work is as follow.In the basis theory of finite element method used in the transient engineering problem, the functional theory and the finite element theory are applied to studied the existence condition of a generalized variation principle, which is the basis of the space-time finite element method.

本文在完善时空有限元法的基础理论和应用技术并将该方法应用于解决电磁装置的瞬态过程分析等相关方面进行了深入的研究与探讨，该工作对于发展瞬变电磁场问题的数值计算方法具有重要的意义，为此进行了如下几方面的工作：在工程瞬变问题的有限元方法的基础理论方面，本文应用泛函理论和有限元理论，系统讨论了一般工程瞬变问题的变分定理的存在条件及对应的变分定理。

A method for producing fatty acid alkyl esters and/or glycerin comprising a step of bringing a fat or oil into contact with an alcohol in the presence of a catalyst, wherein the catalyst is at least one catalyst selected from the group consisting of the following to: a metal oxide having an ilmenite structure and/or a slyrankite structure; an oxide containing a metallic element belonging to the Group 12 and a metallic element belonging to the Group 4; a mixed oxide containing a metallic element belonging to the Group 12 and a tetravalent transition metallic element; a metal oxide containing zirconium and at least one metallic element selected from the group consisting of metallic elements belonging to the Groups 4, 5 and 8; and a metal oxide containing anatase type titanium oxide and/or rutile type titanium oxide, and the metal oxide containing a sulfur component of 700 ppm or less.

脂肪酸烷基酯和/或甘油的制造方法包括在催化剂的存在下使脂肪或油与醇接触的步骤，其中，所述催化剂是选自由下列～所组成的组中的至少一种催化剂：具有钛铁矿结构和/或斯里兰卡石结构的金属氧化物；含有属于第12族的金属元素和属于第4族的金属元素的氧化物；含有属于第12族的金属元素和四价过渡金属元素的混合氧化物；含有锆和选自由属于第4、5和8族的金属元素所组成的组中的至少一种金属元素的金属氧化物；和含有锐钛矿型氧化钛和/或金红石型氧化钛的金属氧化物，并且所述金属氧化物含有的硫成分为700ppm以下。

An optimum design for the complex body formed together with the volute casing, base ring and cement foundation of a hydraulic turbine is made by the gradient method and a program is developed on the basis of finite element analysis with the plane and shell element, body element, boundary element and pseudo element.

本文对由水轮机蜗壳、座环和水泥基础所构成的复杂组合体，在采用板壳元、块体元、边界元和伪单元等四类单元进行有限元分析的基础上，选用最速下降法研究了优化设计过程，并编制成程序系统。

A finite element modeling and analysis of the assembly of a breech mechanism in locking condition was carried out with special finite element techniques such as contact element, gap element and spring element.

利用接触元、间隙元和弹簧元特殊单元，对某大口径火炮的炮尾-闩体-曲臂机构进行了闭锁状态下装配体有限元建模和分析。

In this paper, antioxidant effect of cassia essential oil and clove essential oil to deep-fried beef during the frying process and storage have been systematically researched, as well as the main influence of factors to antioxidant effect of cassia essential oil and clove essential oil in deep-fried beef .

本文对香辛料精油在油炸牛肉加工和贮藏过程中的抗氧化作用的规律，以及各种因素对肉桂油和丁香油发挥抗氧化性的影响做了系统研究。

Geranium Essential Oil 10ml Cypress Essential Oil 10ml Fennel Essential Oil 10ml Juniperberry Essential Oil 10ml in Sweet Almond Oil.

配方天竺葵10ml、丝柏10ml、茴香10ml、杜松子10ml、甜杏仁油。

Ingredient: tea tree essential oil, horsemint essential oil, lemon essential oil, ylang-ylang essential oil, Usage: several times a day, dispense about pearl amount onto cotton bar, directly extend onto the acne, wash free.

成分： 茶树精油、香蜂草精油、柠檬精油、伊兰精油用法：一日数次，每次挤出约珍珠大小，用棉签直接涂抹在痘痘上，用后无需再用清水冲洗。

Essential oil was extracted from the petroleum ether-soluble fraction of the leaves showed having antibacterial activity. It was demonstrated that the essential oil has significant antibacterial activity and the activity of the petroleum ether-soluble fraction is attributed to it. The constituents of the essential oil were analysized by GC-MS.10 relatively abundant components were identified on the basis of MS, among which Geranlgeraniol was found in the essential oil of Perilla frutescens leaves for the first time.

对具有抗菌活性的紫苏叶石油醚萃取物进一步精制，从中提取出挥发油，通过抗菌测试证明紫苏叶挥发油具有良好的抗革兰氏阳性菌和革兰氏阴性菌活性，是紫苏叶石油醚萃取物抗菌活性的来源；采用GC-MS对紫苏叶挥发油进行了成分分析，得到10种含量较高的主要化合物，其中的牻牛儿基牻牛儿醇首次在该植物挥发油中被发现。

First observation of the essential oil of UVA (320-400nm) absorption, taking nine more before the absorption of essential oils and nine of the past record or doubt further analysis of essential oils, UVA nine large oil absorption of the former are: cinnamon, pheasant pepper, sweet orange, lemon, basil, grapefruit, bluegrass rock, roses, dill, 9 kinds of essential oils may be phototoxic as follows: orange blossom, bergamot, fennel, lemon grass, red mandarin, citronella oil, ginger oil, Australia sandalwood oil, lime; E.

首先观察精油的UVA(320-400nm)吸收度，取前九名有较大吸收之精油及九种过往记载或存疑之精油进一步分析，UVA较大吸收度之前九名精油分别为：肉桂、山鸡椒、甜橙、柠檬、罗勒、葡萄柚、岩兰草、玫瑰、莳萝，九种可能光毒精油为：橙花、佛手柑、茴香、柠檬草、红柑、香茅油、姜油、澳洲檀香油、莱姆；大肠杆菌抑菌圈变化中，柠檬、红柑及葡萄柚精油有明显的扩大现象；pUC119 DNA电泳结果，不同精油於电泳模式中，随UVA照光能量增加产生不等断裂情形，除玫瑰精油无影响，其余精油在UVA照光能量增加下皆有不等的DNA断裂情形发生，须再进一步试验。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。