查询词典 H2O

It was found that silicalite-1 an d β zeolite membranes both possess fairly good separation performance for PhOH/ H2O, and C6H6/H2O and that the performance of β membrane for PhOH/H2O is better than that of silicalite-1 one.

结果表明： Silicalite-1和β沸石分子筛复合膜均具有明显的分离性能；在分离苯酚溶液时，β分子筛膜的性能优于Silicalite-1分子筛膜，两者的平均脱除率分别为69.9％和 51.5％。

Pure phase FER zeolite and siliceous FER zeolite have been synthesized in the systems of tetramethyl ethylene diamine- Na2O- SiO2 - Al2O3 - H2O, Na2O - K2O - Al2O3 - SiO2 - H2O -HCO3-- CO32-, and pyridine - propylamine- HF- SiO2 - H2O respectively.

在TMEDA-Na2O-SiO2-Al2O3-H2O体系，Na2O-K2O-Al2O3-SiO2-H2O-HCO3--CO32-体系及Py-PrNH2-HF-SiO2-H2O体系中，分别合成了纯相FER沸石及FER硅沸石。

The calculating models of mass action concentration for electrolyte aqueous chloride solutions KBr-H2O, NH4Br-H2O, and ZnBr2-H2O were founded at 298.15 K to calculate the molalities before saturation according to the ion and molecule coexistence theory and the mass action law.

建立了强电解质水溶液KBr-H2O、NH4Br-H2O和ZnBr2-H2O作用浓度的计算模型，计算了上述三个溴化物二元水溶液体系在温度为298.15K、质量摩尔浓度达到饱和前的作用浓度。

The present paper reports three new europium complexes,EuL3(H2O) 6,EuL3Phen(H2O)4 and EuL3(H2O)5,synthesized with Eu(NO3) 3·6H2O,2-(4-fluorobenzoyl) benzoic acid,Phen and TPPOL=2-(4-fluorobenzoyl benzoic acid,Phen=1,10-phenanthroline,TPPO=triphenyl phosphine oxide.

以硝酸铕、2-(4-氟代苯甲酰基)苯甲酸、1，10-菲咯啉和三苯基氧膦合成了EuL 3(H2O)6，EuL3Phen(H2O) 4和EuL3(H2O)5三种固态配合物。

Their formulas are presented as following:( 1 ) [Co2C6H2(COO44]n ( 2 ){[Co2(C2O4)C6H2(COO4(H2O)4] -4H2O-(NH2CH2COOH)}n ( 3 ){[Co(H2O)6][Co(H2O)4C6H2(COO4] . 4H2O}n These coordination polymers have been characterized by IR,UV-VIS-NIR spectroscopes. The variable temperature magnetic susceptibilities(1.5-300K)of complex (1) and (2) have been measured and studied. Complex (1) and (2) exhibit the anti-ferromagnetic property. The spin-transition phenomenon of complex (2) takes place at 17K.

经X-光衍射测定，确定了它们的结构，分子式如下：(1)[Co_2C_6H_2(COO_4_4]_n (2){[Co_2(C_2O_4)C_6H_2(COO_4(H_2O)_4]·4H_2O·(NH_2CH_2COOH)}_n (3){[Co(H_2O)_6][Co(H_2O)_4C_6H_2(COO_4]·4H_2O}_n 研究了上述三种配位聚合物的红外，紫外—可见—近红外光谱，测定了化合物(1)和(2)在1.5—300K温度范围内的变温磁矩，对它们的磁性研究表明，化合物(1)和(2)均呈反铁磁性，并且化合物(2)在17K发生了自旋转换现象。

A high level ab initio method and an ABEEM/MM model had been applied to study the hydronium ion clusters H3O＋(H2O)n (n＝1～6). The low energy geometries had been optimized and the binding energy and the stability had been discussed, revealing the preponderant existence of the local structure of the H3O＋(H2O)3 cluster.

应用高水平的从头计算方法和ABEEM/MM模型，研究了水合氢离子团簇H3O＋(H2O)n (n＝1～6)，优化得到了低能构象，探讨了其结合能和稳定性，显示出H3O＋(H2O)3局域结构的优势存在。

We noted that one cannot move a priori from microphysics alone to the conclusion that H2O boils, since one might not know that water is H2O.

我们注意到一个人不能从微观物理学单独地把先天性传递给'H2O沸腾'这个结论，因为一个人可以不知道水是H2O。

The mean activity coefficients of Li_2SO_4 and Li_2B_4O_7 for Li_2SO_4- Li_2B_4O_7-H_2O system at 298.15K and for Li2SO4-H2O and U2B4O7-H2O at 273.15K respectively were calculated using Pitzer model and the results reveal the rules of the mean activity coefficients of U2SO4 and U2B4O7 in the mixing solutions changing with the ion strengths and the molality fractions.

本文以化学计量形式计算获得的Pitzer离子相互作用参数，计算了273.15K下Li_2SO_4、Li_2B_4O_7在纯盐体系和298.15K下Li_2SO_4、Li_2B_4O_7在Li_2SO_4-Li_2B_4O_7-H_2O体系中的平均活度系数，揭示了Li_2SO_4、Li_2B_4O_7的平均活度系数随离子强度及不同yb值的变化规律。

The responses of mature and immature adults of Bactrocera correcta to methyl eugenol solutions at different concentrations (1%, 3%, 5%, 7%, 9%, w/w), to the mixture of ME and a sweet bait VA (12.5% vinegar, 25% alcohol and 62.5% H2O), and to the combination of the volatiles of ME solutions at different concentrations and a sweet bait SVA (2.5% sugar, 12.5% vinegar, 25% alcohol and 60% H2O) odor, were tested in Y-tube olfactometer in laboratory.

利用 Y-嗅觉仪测试不同生理状态番石榴实蝇 Bactrocera correcta两性成虫对系列质量分数(1%， 3%， 5%， 7%， 9% w/w)甲基丁香酚溶液、系列质量分数ME溶液与醋酒溶液醋∶酒∶水＝12.5%∶25%∶62.5%(w/w， VA混合液、系列质量分数 ME挥发物与糖醋酒溶液糖∶醋∶酒∶水＝2.5%∶12.5%∶25%：60%(w/w， SVA气味混合物的反应。

The intermolecular interaction energy was calculated with basis set superposition error correction and zero point energy correction. The greatest corrected intermolecular interaction energies of the NTO/NH3 and NTO/H2O supermolecules are －37.58 and －30.14 kJ/mol respectively, indicating that the intensity of interaction between NTO and NH3 is stronger than between NTO and H2O.

经基组叠加误差和零点能校正，求得NTO与NH3和H2O的分子间最大相互作用能依次为－37.58和－30.14 kJ/mol，表明NTO与NH3的分子间相互作用强于与H2O的作用。

As a dominant party,CPC government should play a guardian,supervisee and guarantee role to overcome all the difficulties in the development of charitable cause and bring it into full play in the establishment of harmonious society on policies and regulations basis.

在中国共产党的文献中第一次把发展慈善事业提到&最广泛最充分地调动一切积极因素，不断提高构建社会主义和谐社会的能力&的高度来认识。近年来，社会学界对慈善事业的理论专著发表较多，有鉴于此，笔者不揣浅陋，谈谈自己的认识和见解。

Flow through the land, the land of the scale of operation allows the effectiveness of the land may be raised.

通过土地的流转，土地的规模经营可以让土地的效益得到提升。