立方

The results showed that the TiN andN films are polycrystalline phase. The properties and structure of TiN films are mainly determined by the N2 mass flow rate, and as the N2 mass flow rate increases, the structure of the TiN films transforms to f.c.c. type leading to better the properties of films. The presence of negative bias voltage can optimize the grain of TiN films, lower the defect proportion and denser the films, which improves the hardness of films. The TiN films conform to the free carrier absorption mechanism and there are many of free electrons with lower N content in TiN films. With the increase of N content, the quantity of free electrons and reflectivity of films decrease, and the plasma frequence shifts to the lower energy, which leads to the regular change of colors of films from silver, yellowy, golden to yellow-red, meanwhile the lightness of films decreases. The goldenN film consists of TiN and ZrN phase, but belongs to a sigle f.c.c. structure with (111) preferred orientation. The Zr-doping dosen't change the position of the valance band, conduction band and forbidden band ofN film, but leads to the presence of new energy levels, which is the reason thatN film remains golden. The transparent hard films with good corrosion resistance and high hardness have been prepared and the further reseachs showed that the grain size of those films is by far smaller than the wave length and the width of forbidden band of those films is very broad, is the reasons that those films are transparent.

研究表明：氮化钛和N 薄膜为多晶态，氮流量决定了氮化钛薄膜的结构和性能，增加氮流量能使氮化钛薄膜的结构向面心立方结构转变，从而得到性能良好的氮化钛薄膜；施加负偏压能优化氮化钛晶粒和减少薄膜中的缺陷，使膜层变得更致密，从而提高薄膜硬度；氮化钛主要遵循自由载流子光吸收，氮含量较少时薄膜中的自由电子数目较多，随着氮含量的增加，薄膜中的自由电子数目不断减少，反射率逐渐降低，等离子体频率向低能端移动，从而使薄膜颜色出现规律变化，由金属色银白色到淡黄、金黄再到红黄，并且薄膜亮度呈下降趋势；金黄色的N 薄膜中存在TiN 和ZrN 的分离相，但其为单一的面心立方结构并具有(111)面择优取向；相对于TiN 薄膜，Zr 掺杂后，并没有使薄膜的导带、价带和禁带发生变化，只是在TiN 禁带内增加了新能级，这也正是掺杂Zr 后，薄膜仍

The Ehrlich-Schwoebel barriers of an adatom Cu diffusing down an island of fcc Cu are calculated by molecular dynamical simulation.The two-dimensional(2D) and three-dimensional(3D) ES barriers are calculated and compared with the results of Al.

利用分子动力学中的静态结构弛豫方法对Cu原子在面心立方铜的台阶表面扩散过程中的Ehrlich-Schwoebel势垒进行了模拟计算，研究了二维和三维ES势垒的差别，并将Cu与面心立方Al的结果进行了比较。

He cyclic oxidation resistance of TiAl alloy is improved by depositing Cr\|modified aluminide or alluminide coatings.

iAl合金经过Cr改性铝化处理后，表面形成了具有立方Ll2结构的Al67Ti26Cr7层，立方Ll2结构的Al67Ti26Cr7不仅具有较高的铝含量，而且具有优良的韧性，因而使得处理后的TiAl合金具有良好的抗高温循环氧化性能。

The effects of different management patterns on root system structure and biomass of Bambusa oldhami was studied. The results are as follows: for the extensively managed Bambusa oldhami stand, the dry weight, length, surface area and volume of roots were 317.61 kghm^(-2), 45 304.91 mhm^(-2), 98.65 m^2hm^(-2), and 0.0181 m^3hm^(-2) respectively.

对不同经营方式的绿竹林根系结构和生物量分布开展了研究，结果表明：在粗放经营的绿竹林内，竹根干质量总量为317.61 kghm^(-2)，竹根长度总量为45304.91 mhm^(-2)，竹根表面积总量为98.65平方公尺hm^(-2)，竹根体积总量为0.0181立方公尺hm^(-2)；在集约经营的绿竹林内，竹根干质量总量为1333.12 kghm^(-2)，竹根长度总量为143338.46 mhm^(-2)，竹根表面积总量为3089.15平方公尺hm^(-2)，竹根体积总量为0.5831立方公尺hm^(-2)。

These massive icebergs were calved from Greenland's Jakobshavn Glacier, a massive frozen river that sends 11 cubic miles (45 cubic kilometers) of ice into the ocean each year, more than any other glacier in the Northern Hemisphere.

这些巨大的冰山是从格陵兰岛的亚克普斯豪恩冰川分离出来的。每年，由一条宽阔的冻结河流可以运送11立方英里（45立方公里）的冰到大洋之中，而Jakobshavn冰川的量超过了北半球的任何一条冰川。

Therefore, the previous data of heats of formation of polynitrocubanes estimated from groupadditivity method are corrected.3. Calculations indicate that, for polynitrocubanes, there are parallel relationships between their experimental kinetic acidities pKa, the average s characters in the exocyclic carbon orbital used for the C-H bonds within each molecule, and the average C-H stretching frequencies within each molecule.

计算结果表明，多硝基立方烷的实验动力学酸性pK_a、分子内用于形成C-H键的环外碳轨道平均s成分和分子内的平均C-H伸缩频率之间，存在平行的递变关系，这对基于s_a或v_a的数值预估动力学酸性pK_a、进而指导多硝基立方烷和其它相关化合物的合成有助。

Therefore, the previous data of heats of formation of polynitrocubanes estimated from groupadditivity method are corrected.3. Calculations indicate that, for polynitrocubanes, there are parallel relationships between their experimental kinetic acidities pKa, the average s characters in the exocyclic carbon orbital used for the C-H bonds within each molecule, and the average C-H stretching frequencies within each molecule.

计算结果表明，多硝基立方烷的实验动力学酸性pK_a、分子内用于形成C-H键的环外碳轨道平均s成分和分子内的平均C-H伸缩频率(来源：AB0eC论文网www.abclunwen.com)之间，存在平行的递变关系，这对基于s_a或v_a的数值预估动力学酸性pK_a、进而指导多硝基立方烷和其它相关化合物的合成有助。

X-ray thin film method and its derivative techniques have lots of superiorities: larger irradiated surface area, higher diffracted intensities, better monochromic and parallel X-ray beam, higher resolution, and easier operation procedure.

In或Al含量的增加，将使立方相InGaN(002)和{113}衍射峰宽化，使六角相InGaN和AlGaN、立方相InGaN外延层垂直方向和水平方向的均匀应变增加，固溶体晶粒尺寸细化，非均匀应变增加。

PBG structures with a nonspherical atom configuration can also exhibit complete band gaps in fcc and bcc lattices, when the atoms are arrayed along a certain direction.

能带计算还表明，面心立方、体心立方结构的非球形对称颗粒的光子晶体，当原子取向合适时，也能够形成完全的光子带隙。

The recovery of the pseudocubic angle of LSMO resulting from the relaxation of the shear strain introduced by the growth of rhombohedral LSMO on cubic LSAT was suggested to be the origin of the superlattice structure.

不对称的(103)倒易空间图强有力地证明了这面内调制结构源于因菱形的LSMO和立方衬底LSAT之间的角度失配引起的一种剪切应力的弛豫而导致LSMO薄膜中赝立方角的恢复。

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。