查询词典 H2O

The optimum conditions were as follows: 1 Fe3+/Fe2+ was 1.70-1.75;2 the precipitant,25% ammonia water was used 20%-30%,under 35℃,pH10-11 and with a stirrer speed of 3000 r/min for 1 h;3 in the first package process with gelatin and agar,the optimum amounts was 0.050-0.060g/150mL at the temperature of 55-60℃ and pH of 9-11;In the f...

最佳工艺条件为：(1)Fe3+/Fe2+之比在1.70~1.75；(2)沉淀剂25%NH3.H2O过量20%~30%，温度35℃，pH值11，反应时间为1h；(3)琼脂的最佳用量为0.050~0.060g/150mL；包覆的最佳温度为50~60℃，pH值为9~11；聚乙二醇作为第二次包裹剂时，最佳温度为55℃，反应时间是1h，pH值为4~5；并用透射电镜、分光光度计、古埃磁天平等进行了初步表征。

The SmI2-mediated reductions of ketones,imines and α,β-unsaturated esters have been shown to be instantaneous in the presence of H2O,an amine and in THF.

在水、胺以及四氢呋喃存在下二碘化钐参与的还原酮、亚胺以及α，β不饱和酯的反应能够在瞬间完成。

Comparing to other galaxies,these host galaxies of H2O masers may have some special properties not yet to be noticed.

同其它没有检测到水脉泽的星系相比，水脉泽星系可能隐含着某种或某些特殊性质。

When the continental crust subducted to a certain depth(~90-110 km), almost no hydrous minerals existed in the plate, and nominally anhydrous minerals(NAMs, such as garnet, pyroxene, quartz) in UHP rocks became the main carriers transporting water into the mantle Garnet and omphacite in UHP eclogites at Shuanghe, Dabieshan have been investigated by Micro-FT-IR The results demonstrate that all garnet and omphacite grairks contain structural water occurring as hydroxyl with the content from 30×10^(-6) to 1860×10^(-6)H2O wt.

大陆深俯冲板块到一定深度后（约90~110km），几乎没有含水矿物存在，超高压岩石中名义上无水矿物成为俯冲板块中水的主要载体，是示踪超高压变质流体的重要途径。对大别山双河地区超高压榴辉岩中的石榴石和绿辉石进行了详细的微区傅立叶变换红外光谱分析。

Pre-Gd complex"s enthalpy of dissolution in DMF solution were determined by MS 80 standard calvet microcalorimeter, and the enthalpy of dissolution shows undee line along with atom number"s increasing. Additionally, one of the complexes of copper was studied by Gauss-98 software.

另外，通过采用Gaussian-98w软件中的DFT-B3LYP对Cu(CIoH8N2O4)(CH3OH)(H2O)进行全几何优化异及后续计算，选用有效势基组LanL2DZ基组，优化后的几何构型与实验值较为符合。

A sensitive HPLC method for the simultaneous determination of diniconazole, thiram and imidacloprid from the mixture was developed. YWG C18 column saved as solid phase and CH3OH-H2O as mobile phase. Detection wavelength was set at 260 nm and quantitative analyzing was performed with an external standard method.

采用反相高效液相色谱法，使用YWG C18柱和二极管阵列检测器，以甲醇－水为流动相，检测波长260 nm，用外标法测定了福美双吡虫啉烯唑醇悬浮种衣剂中3种成分的含量。

Each host molecule 1 crystallizes with two CH3OH and two H2O guest solvates locating in the large rhombic channels formed by the parallel arrangements of 1 with significant aromatic stacking interactions.

每个主体分子1同时与2个甲醇和2个水溶剂客体分子结晶，主体分子之间存在显著的芳环堆积作用，在晶胞中呈平行排列并形成大的菱形通道，客体分子位于此通道中。

In addition, the orientational freedom k and the diffusion coefficient D of water molecules are reduced because of new formed hydrogen-bonding structures between water and solvated ions.

另外，水分子与NaCl离子间形成的新氢键结构降低了H2O分子的旋转自由度k和扩散系数D。

The optimum reagent ions for biomolecules were found to be water or ammonia solvated protons, that is, H+(H2O)n or H+(NH3)m.

我们发现对生物分子最佳的试剂离子为水合质子 H+(H2On 或氨合质子 H+

College of City Construction, Wuhan University of Science and Technology, Wuhan 430070, ChinaAbstract ::TiO2 thin film doped with Fe3+ was coated on glass by solgel method.

采用溶胶-凝胶法制备掺Fe3+的TiO2玻璃镀膜， TiO2前驱体凝胶的配比为 n Ti(OC4H9)4∶ n C2H5OH∶ n HNO3∶ n H2O=0.05∶15∶0.35∶2。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。