分子式

水的化学分子式是h2o。

The chemical formula for water is H2O .

；其分子式为Y（RA）3·4H2O。

Its formula is best described as Y ( RA ) 3 · 4H2O .

他不懂水和H₂O分子式是一回事。

He didn 't know that water and H ₂ O are one .

甘油醛：分子式为[CHOCH（OH）-CH2OH]，它是具醛基的一种简单的单糖。

Glyceraldehydes ( CHOCH ( OH ) - CH2OH ) A simple monosaccharide bearing an aldehyde group .

五味子酯甲经质谱及元素分析确证其分子式为C（30）H（32）O9。

The molecular formula of schisantherin A is found to be C_ ( 30 ) H_ ( 32 ) O_9 by mass spectroscopic and elementary analyses .

二氧化碳的分子式是co2。一个许可排放量相当于1吨排放物。

The molecular symbol for carbon dioxide is CO2 . Each allowance is equivalent to one ton of emissions .

（水的分子式是H2O）老师：你认为莎士比亚是怎样写出那些伟大的作品的？

TEACHER : How do you think Shakespeare wrote such master pieces ?

通过PDF号、分子式、矿物名称等可方便快速地检索标准数据。

Retrieval of standard data by PDF number , molecular formulae and mineral names is available .

用~（13）cNMR（COM，DEPT）数据计算化合物的分子式

The calculation of molecular formula of compounds by ~ ( 13 ) c NMR ( com , dept ) data

化学分子式下标的VBA程序

VBA programs for subscript of chemical molecular formula

本文给出了一种由Mo（W）－Cu（Ag）－S簇合物分子式导出可能结构的拓扑方法。

A topological method is outlined for deducing the possible structures from the given molecular formula of Mo ( W ) Cu ( Ag ) S clusters .

合成了芦丁合钴配合物，通过元素分析、ICP、IR1、HNMR和TG-DTA等手段进行了表征，确定其分子式为[Co3（Rt）2（H2O）12]（CH3COO）2；

Rutin coordination compound with Co (ⅱ) was synthesized and characterized by elemental analysis , ICP , IR , TG-DTA and ~ 1H NMR et al .

研究了Nd：NBW（分子式：Nd：NaBi（WO4）2）以及二元钨酸盐的国内外发展现状和应用前景。

The present development and applied future of Nd : NaBi ( WO4 ) 2 ( for short : Nd : NBW ) crystal is introduced .

结果具有以下特点：（1）对于象γ-Al（12）Mg（17）这样复杂的金属间化合物分子式的化学价结构提供了满意的解释；

The following conclusions are drawn : ( 1 ) A molecular formula for an intermetallic compound so complicated like γ - Al_ ( 12 ) Mg_ ( 17 ) has its chemical valence structure interpreted satisfactorily for the first time .

本工作通过变温实验获取化合物（分子式为C（16）H（16）N（2）FBr）理想的1D，2D核磁共振谱图，在此基础上顺利地完成该化合物的结构确定。

With the experiments of variable temperature ( VT ), the ideal 1D and 2D NMR spectra were obtained for the compound ( molecula formula : C15H16N2 FBr ), and the structure of this compound was successfully elucidated .

一种无色固体醇，分子式为CH3（CH2）11OH，用于制作合成洗涤剂和药物。

A colorless solid alcohol , CH3 ( CH2 ) 11OH , used in synthetic detergents and pharmaceuticals .

该数据库以表格形式向使用者提供化合物分子式，英文名称，晶系，空间群，晶面间距（d&值），相对强度，晶胞参数和Miller指数等内容。

The data for each pattern presented in the form of tables of chemical formula , English name , crystallographic system , space group , interplanar spacings , relative intensities , cell parameter and Miller indices .

PESA分子式是一种无磷、非氮的螯合结构，在阻垢性能和生物降解性方面都取得了突破进展。

Molecular formula of PESA is a non-nitrogen non-phosphate chelating structure , and breakthrough progress is made in performance of inhibiting scale and biodegradability .

采用简便的方法合成了稀土席夫碱配合物Nd（H2Salen）2Cl3.2C2H5OH（H2Salen是指N，N-′disalicyli-deneethylenediamine），用红外光谱、元素分析和络合滴定的方法确定了配合物的分子式。

Rare earth-Schiff base complex Nd ( H2Salen ) 2Cl3 · 2C2H5OH was synthesized by a simple and convenient method , and characterized by IR and elemental analysis .

最后本文提出了一种利用串联质谱同位素信息进行分子式预测的算法和系统FFP（FragmentionFormulaPrediction），无论从计算效率上还是预测精度上较以前的方法都有了很大的提高。

In this thesis , we also develop a new method FFP ( Fragment ion Formula Prediction ) which can predict the best formulas of fragment ions more accurately through the minimization of the distance between theoretical and observed isotope patterns within less time .

固态、液态和气态在化学性质上彼此没有差别，都是由分子式为H2O的分子构成的。

Chemically there is no difference between the gas , the liquid , and the solid , all of which are made of molecules with formula H2O . And this is true of other chemical substances .

结果：通过分析可以基本得到稀土配合物的分子式和结构：ML3（NO-3）3.3H2O。

Result : The construction of the complexes was ML 3 ( NO - 3 ) 3.3H 2O .

其分子式为O3，是氧气的同素异形体，具有它自身的独特性质，在自然条件下，臭氧是略带有特殊新鲜气味的淡蓝色气体。

Its Molecular Formula for ozone , oxygen is the same allotrope , with its own unique character , in natural conditions , the ozone is slightly special light blue fresh smell of gas .

BaO-Ln2O3-TiO2体系高介电常数微波介质陶瓷属于类钙钛矿钨青铜结构，其固溶体分子式为Ba6-3x-Ln8+2xTi18O54。分析了结构中占据A1、A2位的离子种类及占有率随x值的变化规律。

BaO-Ln_2O_3-TiO_2 high dielectric constant microwave ceramics are like-perovskite tungsten bronze type structure , whose solid solution is Ba_ 6-3x Ln_ 8 + 2x Ti_ 18 O_ 54 . It analyzes how the ions and occupancy in A_1 , A_2 sites change with x.

采用脉冲宽度为7ns、波长为532nm的激光束，首次利用Z-扫描技术测量了新型功能配合物材料Ni（mpo）2[分子式C10H8N2NiO2S2]的非线性吸收系数和非线性折射系数。

With nanosecond pulses at 532 nm wavelength , firstly the nonlinear optical absorption and refraction coefficients of Ni ( mpo ) 2 complexs by using the Z-scan technique was measured .

络活喜AmlodipineBesylate分子式：C26H31ClN2O8S性质：白色或淡黄色结晶性粉未，无臭、味苦，易溶于水、甲醇。

Norvasc Amlodipine Besylate Molecular formula : C26H31ClN2O8S Properties : white or light yellow crystalline powder , odorless , bitter taste , soluble in water , methanol .

研究了镍酸镧（分子式LaNiO3，简称LNO）导电薄膜的制备，及其与性能之间的关系。

Lanthanum nickel oxide ( LaNiO_3 or LNO ) conducting thin films that could be used as electrodes for improving fatigue and aging properties of ferroelectric thin films were investigated .

介绍了Sidgwick的EAN规则，并利用EAN规则对配合物&特别是羰基化合物的分子式、结构和空间构型进行了预测；

In the paper . Sidgwick 's EAN rule is introduced and made use of to calculate the molecular formula , structure and space structure model of coordination compound , especially carbonyl .

DSC/TGA测试结果表明，所制备的颗粒失重为16.84%，由此可推断CeO2化合物的分子式为CeO2·2H2O；

Moreover , the DSC / TGA measurement results show that the weight loss of the particles is about 16.84 % , manifesting that the molecular formula of cerium oxide compound is CeO 2 · 2H 2O .

别名：磷酸二铵分子式：（NH4）2HPO4外观：无色透明晶体用途：用于浸渍木材及织物以增加其耐久性，可作干粉灭火剂。

Synonym : DAP Formula : ( NH4 ) 2HPO4 Appearance : colorless transparent crystal Use : impregnated wood and fabric to increase its durability , can be used for dry powder fire extinguishing agent .