元素状的

It can be seen that the bulk modulus depends mainly on electrons per atomic volume and mass density, while covalent structure of chemical bonding and N content make more contribution to theoretical hardness, and appropriate content N—N covalent bonding in the same direction tends to increase the shear modulus of nitrides.

说明在Tc的氮化物中，其体弹模量与材料的晶体结构、平均每个原子上的电荷密度和材料的质量密度有关；化学键的共价性结构和氮元素的含量对理论计算硬度有正作用；而剪切模量的极大值则与其层状结构及体系中一定量的方向基本一致的N—N键相关。

All the compounds are characterized by IR and elemental analysis.we design and prepare a bipyridinium supramolecular compound and six coordination compounds, which are also characterized by IR, elemental analysis and X-ray structure analysis. According to X-ray structure analysis, hydrogen bonds and n-n stocking interactions participate in the architecture of three-dimensional framework [H2L1 (NO3)2 (H2O)2]n; one-dimensional zigzag coordination polymer [Hgl21.5CH3OH]n; binuclear metallamacrocycle (HgI2L2)2 3H2O; helical double-stranded one-dimensional coordination polymer [Co2(L2)2-2CH3OH]n; double-stranded one-dimensional coordination polymer [Co2(L3)2-CH3OH-CH3CN]n; and three-dimensional compound [Cu(C5H4NCOO)2(H2O)2]-H2O with hydrogen bonds, three-dimensional coordination polymer {[Cd(C5H6NCOO)2H2O]-DMF}n, which are indirectly obtained from the precursor ligand L3 through metal ion induced the hydrolysis of diamide and self-assembled with the hydrolyzate.

我们首次合成了一个双吡啶鎓超分子化合物和六个过渡金属配合物，并通过IR谱，元素分析和X-ray晶体衍射分析对它们进行了表征。X-ray晶体结构分析表明：超分子化合物[H_2L1·(NO_3)_2·(H_2O)_2]_n是由多种氢键和芳香环间的π-π堆积作用构建的三维无限结构；[HgI_2(L1)·1.5CH_3OH]_n是一维锯齿状配位聚合物；(HgI_2L2)_2·3H_2O是双核金属大环化合物；[Co_2(L2)_2·2CH_3OH]_n是具有一维双螺旋结构的配位聚合物；[Co_2(L3)_2·CH_3OH·CH_3CN]_n为一维双链结构的配位聚合物；以及由非直线形配体L3在金属离子Cu和Cd的诱导作用下发生水解，并且金属离子与水解产物——异烟酸根离子自组装，形成了三维氢键超分子化合物[Cu(C_5H_4NCOO)_2(H_2O)_2]·H_2O和三维配位聚合物{[Cd(C_5H_6NCOO)_2H_2O]·DMF}_n。

Following the expressed concepts, Giotto helps the designer to create traditional guilloches or rosettes, borders, frames, backgrounds, relief effect, latent images, void or anti-photocopy patterns, cut and paste possibilities to resemble the old style guilloche borders, as well as offering the implementation and tools for new evolved elements introducing dynamic changes and line width modulation or a combination of both, which make each design unique.

在被表达的观念之后， Giotto 帮助设计者产生传统的 guilloches 或蔷薇结，边缘，体格，背景，减轻效果，潜伏性的图像，空的或反影印式样，削减和浆糊可能性相似旧的风格扭索状装饰边缘，连同提供落实和工具为介绍动态的变化和线宽度调音或一个两者的组合新进展元素，这使每设计独特。

The geochemical characteristics of those stable elements mentioned above show that pillow lavas from the Erlangping Group have the features of typical island-arc ophiolite.

上述相对稳定的元素的地球化学特征表明，二郎坪群枕状熔岩具有典型的岛弧蛇绿岩的特点。

Among these particles, the prismy crystals and regular cubic crystals were specifically identified as sulfates of Ca and NaCl from sea salt respectively. But the spherical, fractal and sheet-like particles have very diverse compositions. b The composition of fractal particles is the most complicated, and that of spherical ones is less complex.

其中，棱柱形长棒晶粒和规则的立方形晶粒具有特定的组成，分别为钙的硫酸盐和来自海洋的NaCl晶体，而球形、块状和片状颗粒元素组成变化较大。b块状颗粒的化学成分最为复杂，球形颗粒其次。

In this paper, the main work has been focused on the rare reported arsenomolybdates, and nine novel compounds have been synthesized. Sandwich arsenomolybdates:(NH_4)_(12)[Cr_2AsMo_7O_(27_2]·11H_2O (1)(NH_4)_(14)[Cu_2AsMo_7O_(27_2]·13H_2O (2) Double sandwich arsenomolybdates:(NH_4)_(12)Cu(H_2O)_4[As_2Fe_6Mo_(22)O_(85)(H_2O)]·19H_2O (3)(NH_4)_(15)[As_2CoFe_5Mo_(22)O_(85)(H_2O)]·16H_2O(4)(NH_4)_(14)Mn_(0.5)[As_2Fe_5MnMo_(22)O_(85)(H_2O)]·22H_2O(5) Cagelike arsenomolybdate:(NH_4)_(11)[AgAs_2Mo_(16)O_(54)]·9H_2O (6) Organic-inorganic molybdenum arsenate complexes:CuAs_6Mo_6O_(30{[Cu_4]_3[CuAs_6Mo_6O_(30)]}_2·6H_2O (7),[Cu_2]_3[As_3Mo_3O_(15)]_2·2H_2O (8)(NH_4)_(10){Cu(H_2O)_4}[AsMo_6O_(21)(O_2CCH_3)_3]_2·12H_2O (9)All of the above polyoxomolybdates were characterized by IR spectroscopy, TG-DSC, elemental analysis, and single-crystal X-ray analysis to identify their structures and chemical compositions.

本文选择目前报道尚少的砷钼杂多化合物为研究重点，合成了不同结构类型的九个新的杂多化合物：单夹心化合物：(NH_4)_(12)[Cr_2AsMo_7O_(27_2]·11H_2O(1)(NH_4)_(14)[Cu_2AsMo-7O_(27_2]·13H_2O(2)双夹心化合物：(NH_4)_(12)Cu(H_2O)_4[As_2Fe_6Mo_(22)O_(85)(H_2O)]·19H_2O(3)(NH_4)_(15)[As_2CoFe_5Mo_(22)O_(85)(H_2O)]·16H_2O(4)(NH_4)_(14)Mn_(0.5)[As_2Fe_5MnMo_22_O_(85(来源：AbcccBC论文网www.abclunwen.comH_2O]·22H_2O(5)笼状结构化合物：(NH_4)_(11)[AgAs_2Mo_(15)O_(54)]·9H_2O(6)有机配体修饰的化合物：CuAs_6Mo_6O_(30{[Cu_4]_3[CuAs_6Mo_6O_(30)]}_2·6H_2O(7) [Cu_2]_3[As_3Mo_3O_(15)]_2·2H_2O(8)(NH_4)_(10){Cu(H_2O)_4}[AsMo_6O_(21)(O_2CCH_3)_3]_2·12H_2O(9)对上述新化合物进行了瓜光谱分析、元素分析、热分析和X-射线单晶衍射测试，确定了它们的组成和结构，对部分化合物还进行了UV-vis及荧光光谱分析和循环伏安表征。

5The distribution patterns of rare earth element compositions in the hydrothermal components are similar to that of pacific seawater. This infers the complex and significant interactions of hydrothermal fluid with surrounding seawater during its diffusing process. Dissolved trace metals in the hydrothermal fluid can be removed by settling terrigenous or biogenic particulates and precipitated quickly from the hydrothermal plume round the vent. On the other hand, hydrothermal particulates would also scavenge some elements from the seawater to coprecipitate into the sediments.

5岩芯沉积物中热液源组分携带的稀土元素组成具有类似海水的分布模式，反映了热液流体喷出海底后与其它物源物质之间的复杂的相互作用：一方面大量生物和陆源碎屑物质的快速沉积导致溶解态的热液源物质被快速清扫，无法向外扩散，快速堆积在热液喷口附近；另一方面，随热液羽状体向外扩散的颗粒态热液源物质也清扫海水中的元素共同进入沉积物。

It is showed that Class Ⅲ malocclusion samples in this study were significant characterized with longer mandibular corpus, smaller condyle and coronoid process. Meanwhile, the prominence of size difference on chin area was observed, associated with maximum size difference localized on menton area.

两组的有限元素形态分析法(finite element analysis morphometry)比较结果显示：三级异常咬合者有较长的下颚骨体，颏部区域也比正常咬合者大，但condyle及喙状突则较小；另外menton附近区域有最大但是小范围的尺寸差异，是三级异常咬合者和一级正常咬合的差异特徵。

E. Nb〓C twins and erose Nb〓C phase, which maybe influence the property of Nb-Si system intermetallics markedly.

在Nb相上还发现Nb〓C相，表现为孪晶和不规则状两种形态，这是由于热处理过程中碳杂质的引入所造成的，微量杂质元素的存在可能会对材料的性能造成很大的影响。

Compared to the sample without ultrasonic treatment, it was found that, for AZ31 magnesium melt alloy treated by ultrasonic, the refined grain size and the inproved distribution of grain with its shape of oval-shaped or spherical can be obtained, and the precipitation inside Al matrix was inhibited The Mg17 Al12 precipitates distributed mainly along the grain boundary and hardness was improved remarkedly.

通过对铁合金AZ31进行熔体超声处理发现，处理后试样的晶粒较未进行超声处理的试样有明显细化，分布均匀程度提高，形状呈椭圆状或球状，合金元素Al在晶粒内的析出被抑制，Mg17Al12第二相的析出主要集中于晶界，硬度有明显提高，并且通过试验确定出了最佳处理功率和时间，为超声波在铸造生产中的应用提供了依据。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。