钡的

And the lattice distance expands anomalously with decreasing particle size. Using the model of long-range interaction and its cooperative phenomena altered by particle size, the size-induced cubic-tetragonal phase transition, the anomalous lattice expansion, and the change in chemical bonding characters have been well understood.

采用长程相互作用的晶粒尺寸效应模型，对钛酸钡纳米晶结构相变、晶格间距异常增加、价键性质变化等实验现象给出了合理的统一的解释；并把该模型扩展到解释与钛酸钡晶体具有不同共价性成分的氮化镓等纳米体系的相变以及晶格结构变化现象。

The effects of synthesis temperature on the lattice parameter,the crystallite size and the content of CO2-3 of the prepared samples,the effects of the concentration of reactants on the particle size and morphology,and the effects of the molar ratio of barium hydroxide to tetrabutyl titanate on the molar ratio of bar...

研究了合成温度对样品的晶胞参数、晶粒大小和CO32-含量的影响；反应物浓度对样品的颗粒大小和形貌的影响；氢氧化钡与钛酸四丁酯的摩尔比对样品中钡钛摩尔比的影响。

Objective The examination of barium enema ever since 1905,colonoscope occurrence,it is very development to diagnose in small nonpolypoid lesion of large bowel.

目的195年首次钡灌肠X线检查被用于临床诊断大肠病变以来，大肠镜的问世，为提高早期大肠癌的诊断和治目的 1905年首次钡灌肠X线检查被用于临床诊断大肠病变以来，大肠镜的问世，为提高早期大肠癌的诊断和治疗，提供了最简便、最安全、最有效的方法。

The results showed that various morphologies of barite particles, such as flowerlike aggregates, spheres, rod-like superstructures etc. could be synthesized by changing the concentration of PSMA, pH value of solution, and molar ratio of Ba~(2+) to SO_4~(2-).

结果显示，通过改变PSMA的浓度、溶液的pH值、溶液中钡离子与硫酸根离子的相对比例R等实验条件能够合成各种形貌的硫酸钡颗粒诸如花形片状团聚体、球形、棒状超结构等。

Compared with the unpromoted catalyst, the presence of BaO increased the initial activity and Co dispersion, but decreased the Co particle size.

氧化钡提高了Co/SiO2的初活性和钴的分散度，降低了钴的颗粒度；添加0.5%~1.5%氧化钡有利于提高Co/SiO2的稳定性。

In general , ba stars belong to binary system , and their heavy - element overabundances are due to the accreting material from the companions ( the former tp - agb stars and the present white dwarfs ). carrying out a series of monte - carlo simulations , the changes of orbital elements of binaries are recalculated for wind accretion scenario of the total angular momentum conservation

研究表明，钡星应该属于双星系统，其重元素超丰来自双星吸积，它的伴星已经经历了s -过程核合成，而且由在以前发生的同其伴星(以前是agb星，现已演化为白矮星)的质量传输过程中，从伴星那里获得了富含重元素的物质，这样造成了钡星的重元素超丰。

A harmonic of Nd:YAG laser(532 nm) pumped barium nitrate crystal in external resonator and excited stimulated Raman laser.Experimental setup adopted the Raman shifter consisted of external cavity and two prisms spectrometer.The external cavity was composed of diachronic mirrors with optimal reflectivity for Stokes components.

采用单端泵浦的外置拉曼振荡腔与双棱镜分光装置进行了硝酸钡晶体拉曼激光实验，泵浦源为倍频Nd： YAG的532 nm激光，硝酸钡晶体通过水溶液降温法生长，尺寸为10 mm×10 mm×48 mm，采用特殊镀膜的腔镜对各阶斯托克斯光进行优化选择。

A harmonic of Nd:YAG laser (532nm) pumped barium nitrate crystal in external resonator and excited stimulated Raman laser. Experimental setup adopted the Raman shifter consisted of external cavity and two prisms spectrometer. The external cavity was composed of diachronic mirrors with optimal reflectivity for Stokes components. Barium nitrate crystal was grown by the aqua-solution cooling method with the size of 48mm×10mm×10mm.

采用单端泵浦的外置拉曼振荡腔与双棱镜分光装置进行了硝酸钡晶体拉曼激光实验，泵浦源为倍频Nd：YAG的532nm激光，硝酸钡晶体通过水溶液降温法生长，尺寸为10mm×10mm×48mm，采用特殊镀膜的腔镜对各阶斯托克斯光进行优化选择。

So as long as the choice of the high grade size in 325m above barite powder, it can completely replace Barium sulphate precipitation, and can have better effects than Barium sulphate precipitated

所以只要选择品位高的粒度在325目以上的重晶石粉，就完全可以代替沉淀硫酸钡，而且可以起到比沉淀硫酸钡更好的效果。

According to the production experience for many years,the factors of effecting on the quality of precipitated barium sulfate are summarized and the measures for improving the product quality are put forward.

根据多年的生产经验，总结出影响沉淀硫酸钡产品质量的因素；就原料液含杂质超标以及各生产工序工艺条件控制不合理提出解决问题的办法；提出了提高沉淀硫酸钡产品质量的措施。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。