查询词典 constituents

Additionally, 75 volatile chemical constituents have been identified from the petroleum ether extracted part by capillary GC-MS, and the relative percentages of them are determined by GC method. The result showed that the volatile constituents of Musella lasiocarpa mainly includes advanced alkane, aliphatic acid and ester, aldehyde, ketone, aromatic and its heterocyclic compounds. With the compounds that have been isolated and identified from Musella lasiocarpa, the biogenensis pathway of new compound MT-3 is approached. Furthermore, the bacteriostasis of the 6 compounds to Escherichia coil, Pseudomonas aerusinosa, Bacillus megaterium, Sarcina lutea and Bacillus subtilic are determined by flat dilution method.

此外，从其石油醚萃取部分用毛细管色谱法分析鉴定出75种挥发性化学成分，并测定了各组分的相对百分含量，结果表明，地涌金莲挥发性化学成分以高级烷烃、高级脂肪酸酯及醛、酮、芳香和芳香杂环化合物为主；根据从地涌金莲中鉴出和分离得到的化合物，探讨了新结构化合物MT-3的生源代谢途径；采用平板稀释法测定了地涌金莲中六种化学成分对大肠杆菌、绿脓杆菌、巨大芽孢杆菌、藤黄八叠球菌和枯草芽孢杆菌的抑菌作用。

The conception, studied objects and basic constituents of non-Smith strata are elaborated from theory level: Non-Smithian strata are the strata that have undergone mixing of different degrees, thus were deformed, metamorphosed and displaced into disorder totally or partially. They are the disorder parts in orogenic belts. Melange is the solo studied object of non- Smithian stratigraphy. The slices in melange is one of the basic constituents of non- Smithian strata, and also one of the basic units in the non-Smithian mapping. The slices used in this paper refer to blocks divided by small-scale tectonic boundaries and have certain constitutes. Superslices used in this paper refer to a set of slice association with similar tectonic deformation bounded by large-scale tectonic mixing.

从理论上阐述了非史密斯地层的概念、研究对象和基本构件：非史密斯地层（non-Smithian strata）是指那些经历过不同程度的混杂建造，并经历了变位，变形、变质，全部无序或部分无序的地层，主要指造山带地层中的无序部分；混杂岩是非史密斯地层的唯一研究对象；混杂岩中的构造岩片是非史密斯地层基本构件之一，亦是非史密斯地层和地质填图基本单位之一，岩片是指以构造拼合边界所分割的具有一定物质构成的地质体；物质建造形成于同一大的构造旋回期（如晋宁期、加里东期、海西期等）、亲源关系密切、大致经历了相似变形、变质历程的一套岩片组合体被称之为超岩片。

The yield, chemical components and relative contents of essential oil extracted from Eupatorium adenophorum Spreng by Soxhlet extraction and steam distillation were compared. The volatile chemical constituents of essential soil extracted were analyzed by Gas Chromatography-Mass Spetrometry. The results showed that the constituents of the volatile from the same plant and the relative contents were significantly different due to different extraction methods.

采用索氏提取器及水蒸气蒸馏两种方法对采于不同时间、不同产地的紫茎泽兰Eupatorium adenophorum Spreng挥发性成分进行了提取，比较了两种方法的得油率、化学组成及其相对含量；采用GC-MS联用技术对其中的挥发性成分进行了分析。

Bycomprehensive use of phytochemical isolation methods, 37 compounds were isolated 5from the methnol-chloroform extract of P. telfairia, by methods of modern spectroscopy,six compounds' structures were elucidated, including 2 kinds of fatty acids, 2 kinds ofsterols and 2 kinds of are esters of sterol and fatty acids. Five of them were reported forthe first time on the chemical constituents' research of P. telfairia. Otherwise, weperformed GC-MS analysis of the volatile fraction in this extracts, the result revealedseveral constituents such as alkyl hydrocarbons and methyl esters of fatty acids.

综合利用各种植物化学分离手段，从海头红的甲醇-氯仿（1 ：1）提取物中分离到单体化合物 37 个，采用多种现代波谱技术手段鉴定了其中 6 个化合物的结构，包括 2 个脂肪酸类成分，2 个甾醇类成分，以及 2 个甾醇的脂肪酸酯，其中 5 个在海头红化学成分研究中为首次报道；另外还对该提取物的挥发性成分作了 GC-MS 分析，显示含有烷烃及脂肪酸甲酯等成分。

The results showed that the hardness of CGHAZ is decreasing,bainite ferrite strip coarsens,the shape of M－A constituents transforms strip into block,its size becomes large,and its bulk extends, with increasing of t8/5.In addition austenitic,M－A constituents in γ grain boundary coarsens and manifolds with increasing of t8/5.They all deteriorate the toughness of pipeline.And the extended zone of impact fracture shows brittle.

结果表明，随着t8/5的增加，粗晶区硬度逐渐减小，贝氏体化铁素体粗化，且其间的M－A组元由条状转变为块状，平均弦长增加，体积分数增大，奥氏体晶界M－A组元增多变粗，管线钢的韧性恶化，抗裂性变差，冲击断口扩展区呈脆性断裂。

According to the non-partisan Center for Voting and Democracy redistricting is quite simply a process in which legislators choose their constituents before their constituents choose them.

根据非党派的中心投票和民主的重新划分选区是很简单的过程中，立法者选择其成分在其成员中挑选。

OBJECTIVE: To analyse oily constituents of Meconopsis punicea Maxim. METHOD: The oily constituents were analysed and identified by GC-MS.

潘宣目的：通过对红花绿绒蒿油脂性化学成分的分析，为开发利用该植物资源提供科学依据。

To research on quantitative relations between neutral aroma constituents and concentration and quality of aroma of flue-cured tobacco in Panxi tobacco-growing areas, and to offer a new and impersonality method of flue-cured tobacco quality assessment, the authors carried out partial correlation analysis, path analysis and stepwise regression analysis, and established mathematics model and studied the factors of neutral aroma constituents affecting concentration and quality of aroma of flue-cured tobacco in this paper.

为了探究攀西烤烟烟叶中性致香成分与香气质和香气量的定量关系，并为客观准确评价烟叶质量提供新方法，该文采用偏相关分析、通径分析和逐步回归的分析方法，建立数学模型，研究了影响烤烟香气质量的中性致香成分。

First, based on the relations of stress and strain between the whole medium and its macroscopically isotropic constituents, an explicit relation between elastic matrices of the whole medium and its constituents was derived. Combining the explicit relation of elastic matrices with the strain's relation, two coefficient tensors were defined and analyzed to get a general relation between the hulk and shear modulus of the whole medium under the assumption that all the field variables are in a unified coordinate system. Secondly, combining these relations with the classical Hashin-Shtrikman elastic modulus bounds, four new expressions of elastic medium of the whole medium were obtained and compared with the original hounds. Last, these formulae were applied in the computation of effective elastic moduli of clean sandstone saturated with pore water.

首先基于整体介质与宏观各向同性组分满足的应力和应变组分关系，推导出整体介质弹性矩阵与组分弹性矩阵之间的显式关系，联合其应变关系，定义和分析了对应的两个系数张童，并据此导出了相关场变量位于统一坐标系时整体介质体积模量与剪切模量的关系；然后将经典的Hashin-Shtrikman弹性模量边界模型与上述关系式结合，得到4个新的整体介质弹性模量的估算公式，再与原始的Hashin-Shtrikman弹性模量边界进行了比较，最后针对饱和水纯净砂岩介质进行了试算。

The coated layer comprises a mixture whose main constituents are a polyester resin and a melamine compound, and not less than 60% by weight of constituents forming the coated layer is the polyester resin.

涂层含有主要成分为聚酯树脂和密胺化合物的混合物，形成涂层的组分中不少于60％的是聚酯树脂。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了