In EIMS there are many frame-rearrangement ion peaks. The cleavage of C-O, C-F. C-CF3 bonds and the formation of five-or four-membered heterocyclic ring ions containing nitrogen by losing CO are major mass spectrometric characters.

1、

Range of of ferric oxide is FeO 1%~ 7%, magnesia MgO, and base salinity is fixed at 1. 08 pentabasic system SiO_2-CaO-MgO_ ( sat)-Al_2O_3-FeO slag.

氧化铁范围为FeO1%～7%，氧化镁MgO，盐基度固定为1.08的五元渣系SiO2-CaO-MgO（sat）-Al2O3-FeO炉渣。

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2、

In this paper, method of surface modification about TiO_2 nanoparticles via silane coupling agent and emulsion co-polymerization of styrene-acrylate in the presence of inorganic TiO_2 nanoparticles was studied firstly.

本文首先研究了利用硅烷偶联剂改性纳米TiO2的方法以及在改性纳米TiO2粒子存在下的五元单体苯丙乳液共聚合。

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3、

The purpose of the study is to establish a new coprecipitation coating doping process for preparing zinc oxide varistor ceramic powders in which the primary constituent is ZnO with smaller amounts of five dopants.

本研究旨在建立以ZnO为主体，五元掺杂物共沉淀包膜法制备氧化锌压敏陶瓷用粉料的新方法。

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Based on the analysis, three single-port 1-dimension 5-element pattern reconfigurable Yagi patch antennas are designed. By switching the states of the parasitic elements, the radiation beams can scan in the E-plane in the upper space.

在此基础上，设计了三个单端口馈电的方向图可重构五元微带八木天线，通过开关调节寄生贴片的状态，可使天线在E面上半空间实现波束连续扫描。

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5、

When the one-carbon unit is at the formaldehyde oxidation level, the imidazolidine with a five-membered ring structure is the active site.

四氢叶酸辅酶（THF）在生物体内的作用是转移不同氧化态的一碳单元，当一碳单元处于甲醛氧化态时，活性部分是具有五元环状结构的咪唑烷环。

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6、

Refining slag is the key in the production of LF CaO-SiO_2-Al_2O_3-MgO-CaF_2 and CaO-Al_2O_3 are the usual refining.

常用的精炼渣系有CaO-SiO2-Al2O3-MgO-CaF2五元渣系和CaO-Al2O3渣系等。

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Self-Assembly Chemistry of Ligands Bridged by N-Containing Five-Membered Heterocyclic Rings and Symmetrical Ligands Containing Double Schiff-base

含氮五元杂环桥联及含对称双Schiff-base有机配体的合成及自组装化学研究

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The effect of electroless plated Ni Co P alloy coating on the kinetic properties of Mm ( NiCoAlMn) 5 rare earths based hydride electrode was investigated by electrochemical techniques.

通过电化学方法，研究了化学镀Ni Co P合金对Mm（NiCoAlMn）5五元稀土贮氢合金电极动力学性能的影响。

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9、

Detailed analysis and studying to CWM DTD at first, this paper puts forward five sector coding method of DTD and corresponding XML coding method.

本文首先对CWM DTD的详细分析和研究，本文提出了DTD的五元编码方法以及对应的XML文档编码方法。

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10、

A study of the mineral composition of cement in the quinary system cao-sio_2-al_2o_3-fe_2o_3-so_3

CaO-SiO2-Al2O3-Fe2O3-SO3五元系统中水泥矿物组成的研究

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VLE Measurement and Calculation of NH_3-H_2O-CO_2-N_2-H_2 System under High Pressure

高压下NH3-H2O-CO2-N2-H2五元系汽液平衡测定和计算

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Synthesis of 5-membered Ring Compounds Using Zirconium; Synthesis and Mechanism of Nanocrystalline Ceria-Zirconia Solid Solution by SAS Process

锆参与的五元环状化合物的合成方法学研究纳米晶铈锆氧化物固溶体的SAS合成及机理研究

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One of the promising methodologies in chemical CO2 fixation is the cycloaddition between carbon dioxide with epoxides to afford the five-membered cyclic carbonates.

在CO2化学固定方面，利用二氧化碳和环氧化物环加成得到五元环状碳酸酯是最具前景的方法之一。

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The Intermediate of Crosslinking Reaction between Wood and Polycarboxylic Acid: Ftir Spectra Characteristic of Cyclic Anhydrides Reaction Intermediate

多元羧酸与木材的交联反应机理&五元环酸酐反应中间体的FTIR波谱特征

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Based on the mineralogy feature, studies the B_2O_3's influence on mineralogy feature, compressive strength and reducibility of five elements agglomerate.

从五元系固结块的工艺矿物学特征入手，研究了B2O3对五元系固结块矿物学特征及抗压强度和还原率的影响。

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For its special structure, it is easily affected by light 、 heat 、 oxygen 、 huminity 、 pH and metal cations.

是一种具有连二烯醇结构的五元环内酯，易受到光、热、氧、湿气、pH和金属离子等的影响。

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Oxazoline, a five-membered heterocyclic ring containing both N and O coordinated atoms, is an excellent class among nitrogen-containing chiral ligands.

其中，同时含有N和O的五元杂环的恶唑啉配体是比较优秀的一类含氮手性配体。

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18、

Studying progress on the structures of pentacyclic triterpenoids with a Pentatomic ring e

E环为五元环三萜的结构研究进展

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This set of commemorative stamps is issued in denominations of80 fen, 2 yuan, and5 yuan.

套纪念邮票包括八角、两元、五元三种票额。

词典精选例句

20、

Do you have change for five dollars?

你有五元零钱吗？

《牛津高阶英汉双解词典》