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Meanwhile, the isomer with a larger change of dipole moment has larger value of the first hyperpolarizability during the charge-transfer process.

5, 6, 7顶点双取代碳硼烷桥连分子受推拉电子基的影响,5, 6, 7顶点碳硼烷的构型发生一定变化,碳硼烷中两个C原子间的距离变长;同时碳硼烷中两个C原子取代位置的不同,影响了分子的稳定性和极化率,取代基团与碳硼烷中成键数较低的C原子相连的异构体,稳定性较好且具有大的极化率; 5,6,7顶点双取代碳硼烷桥连分子形成一维结构有利于分子内电荷转移,在电荷转移过程中偶极矩变化较大的体系,其二阶NLO系数也较大。

Roll press leads to faster electrochemical kinetic properties of LiCoO〓 electrode, lower impedance, and higher specific capacity.

辊压使LiCoO〓电极获得了较快的电化学动力学性能、较低的阻抗和较高的比容量。

The effect from transverse webs and frames and the effect from collision velocity on ship bow collision properties are also studied in this paper. 7. The idea of buffer bow is put forward from aspects of the overall situation of environmental protection and reducing the damage of struck shipside caused by striking bow. The influence of curvature of bow shape on mode of distortion, collision force, collision force density and energy absorption of bulbous bow is described detailedly through a series of collision numerical simulation for bulbous bows that have different curvature.

发现横向框架对于船艏结构的变形形态,碰撞力及能量吸收都有一定的影响,在进行碰撞分析时不能忽略,在较低的速度范围内碰撞速度对碰撞力及能量吸收没有太大影响,所以可以从较高速度撞击后得到的能量吸收曲线中得到较低速的碰撞能量吸收曲线,从而可以得到低速碰撞时的撞深,然后通过这个撞深在较高速碰撞的碰撞力曲线中可以获得低速碰撞的碰撞力曲线。

The goals of our work are to study the way of TiN coating on the chamber surface, especially on the inner surface of slightness pipe vacuum chamber, to get the surface with the characters of low surface thermal outgassing rate, low photon stimulated desorption and resistance to multi-electron impact, and to achieve experiment data and theory analysis as the basement of the fabrication of future particle accelerator EHV system.

本课题目的是实验研究采用材料表面溅射沉积TiN膜表面处理方法,获得材料极低表面热放气率、抗多次电子撞击和较低的辐射光致解吸,特别是细长管道真空室表面处理,为新一代粒子储存环极高真空系统建造提供实验数据和理论依据。

Countries with taller women have higher rates of twinning compared to countries with shorter women.

与女性平均身高较低的国家相比,在女性平均身高较高的国家孪生的发生率也较高。

When the higher risk paper is trading at a higher than normal yield spread, the higher risk security is bought and the lower risk security sold; when the spread narrows, the trade is reversed.

当风险较高的票据以高于一般的收益率差价进行交易时,则购进风险较高的证券,售出风险较低的证券;当差价缩小时,交易则按相反方向进行。

Using stereomicroscope, we observed the fracture line direction and location as well as the angle between the fracture line and the attrite plane. The data was compiled into statistics and analyzed. The results revealed that most of the vertical root fractures occurred in teeth with severe attrite crown and flat root. Numerous bucco-lingual oriented fractures occurred in the mesial root of molars, and we found three non-endodontically treated cases with mesio-distal oriented fractures in the palatal roots.

结果发现,两组的垂直牙根断裂均好发於牙冠严重磨耗(77.4-88.2%)且扁平的牙根(61.8-75.8%)上,以大臼齿的近心牙根发生率最高(64-85.7%),多为颊舌侧走向(91.2-91.9%),且於未根管治疗组别亦发现三例腭侧根断裂,走向为较宽的近远心方向,显示牙根断裂会沿著牙根较宽的方向发生;同时,未经根管治疗而产生垂直牙根断裂的牙齿具有根叉位置较低的现象(61.8%),牙根於比例上有较短小的特徵。

Three dimensional (3D) honeycomb-like porous structures made up of nanoslices of hydroxy cupric phosphate heptahydrate Cu8(PO3OH2(PO4)4·7H2O single crystals were constructed by a facile assistant surface oxidation technology. The pore size of the 3D structure ranges from hundreds of nanometers to two micrometers, and the thickness of the two dimensional (2D) nanoslices is about 50~100 nm. The wettability of the porous surfaces was transformed from superhydrophilic to superhydrophobic by chemical modification with octadecanethiol or PDES.

相对于硬脂酸修饰表面,氟硅烷修饰表面对水滴具有更低的接触角滞后和较低的黏着,这可能是因为氟硅烷比硬脂酸具有更低的表面自由能所致。2、利用酸辅助的表面氧化技术制备了由Cu8(PO3OH)2(PO4)4·7H2O单晶组成的三维蜂巢状多孔结构,孔尺寸约为几百纳米到2微米,二维的纳米片厚度为50~100 nm。

Results of megascopic pyrolytic characteristics and the quantitative chemical dynamic analyses of these samples show that: although the occurrence and accumulation enrichment of immature and low mature oils are related to a number of different geological factors and conditions, under relatively low thermodynamic stresses organic matters related to immature and low mature oils do be matured to generate hydrocarbons.

这些样品的宏观热解特征和化学动力学定量分析结果表明,未熟─低熟油的产出和富集虽与多种不同的地质条件或因素有关,但在相对较低的热应力条件下,与未熟—低熟油产出有关的有机质样品确实能开始明显成烃。

In addition, the decreasing ratio of viscosity reached 90% with low temperature and short reaction time, which showed the high oxidative degradability of Fenton reagent for sesbania gum.

另外,只需较低的温度(25 ℃)和较短的时间(20 min),芬顿试剂就能使田菁胶粘度下降90%以上,显示了较好的降解效果。

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推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。