平衡法

During the numeric model processes, the finite element method is used to build the discrete model and analytical theory of the rotor-bearing system. The entire system is divided into several dividable substructures, each of which develops individual systematic mathematic model. Finally, the motion equation of whole structures is combined by the integrity of the dynamic variables and force balances on connections of each substructure.

在数值建模过程中，以有限元素法为基础，建立转子-轴承系统之离散模型与分析理论，将整个系统结构划分成若干个可分离部位的子结构系统，并发展子结构的个别系统数学模型，最后整体结构的运动方程式再以各子结构结合面上节点的动态参数一致性及力系平衡进行结合。

Quantum chemical calculations were performed based on these conformations to explain the experimental data. 4. The molecular recognition of the chiral Salen Fe complexes towards imidazole derivatives and the measure of the equilibrium constants of host-guest system of the Salen Fe and EMIm a.

用紫外-可见光谱滴定法考察了不同主体Salen-Fe对咪唑及其衍生物的分子识别行为，测定了识别过程的平衡常数和热力学参数，讨论了影响主客体配位能力的有关因素；系统地考察了主客体缔合反应的圆二色光谱性质。

In this thesis, a series of complexes based on aromatic multicarboxylic acids have been successfully synthesized in solutions or under hydrothermal conditions. Their structure and properties are investigated.(1) Eight complex compounds have been synthesized and characterized by X-ray single crystal diffractive technology: The eight complexes are listed as following: [Cu242] complex 1 [Cd22(H2O)4]·4H2O complex 2 [Co(H2btc)(H2O)3] complex 3 [Co2(H2O)2]·H2O complex 4 [Ni22(H2O)4] complex 5 [Cu22(H2O)4] complex 6 [Co(H2biim)2(H2O)2](H2btc) complex 7 [Zn(H2biim)2(H2O)2](H2btc) complex 8 The structure of complex 1 is dinuclear complex resulted from weak interactions（0-D chain）; complex 2 is 1-D chain stucture result from interactions of water molecules; complex 3、4、5、6 are coordination polymers using hydrothermal synthses, where the first kind ligand is H4btc, the second kind ligand is phen and Co2+、Ni2+、Cu2+ as center ions, respectively. While the coordination enviroment of Co2+ is the same in complex 3, the coordination geometries around the Co atoms in complex 4 are obviously different because of the different reaction conditions. In complex 4, the 1-D chains are connected into 2-D layer through carboxy groups of ligand H4btc. The structures of complex 5、6 are 1-D chain stucture result from interactions of carboxy groups in ligand H4btc. Complex 7、8 are homeomorphy compounds. Either of them are linked to the 3-D chains through intermolecular hydrogen bonds. Each H4btc lose two protons and H2btc2- acts as negative electron balance.

合成了8个结构新颖的配合物，并用X-射线单晶结构分析方法确定了晶体结构，分别为： [Cu242] 配合物1 [Cd22(H2O)4]·4H2O 配合物2 [Co(H2btc)(H2O)3] 配合物3 [Co2(H2O)2]·H2O 配合物4 [Ni22(H2O)4] 配合物5 [Cu22(H2O)4] 配合物6 [Co(H2biim)2(H2O)2](H2btc)配合物7 [Zn(H2biim)2(H2O)2](H2btc)配合物8 配合物1是一个依靠弱作用连接的双核铜结构；配合物2借助水分子形成一维链状结构；配合物3、4、5、6是以H4btc为第一配体、phen为第二配体，通过水热法合成的配合物，其中，Co2+、Ni2+、Cu2+为中心离子；配合物3中的二价钴离子具有相同的配位环境，不同反应条件下得到的配合物4中的二价钴离子存在不同的配位环境，在配合物4中，一维链通过H4btc上的羧基形成一个二维层结构；配合物5、6是借助H4btc上的羧基形成的一维链状结构；配合物7、8属于异质同晶结构，它们的分子通过分子间氢键形成三维网状结构，H4btc上的羧基失去2个质子，作为一个二价负离子起到电荷平衡作用。

The maximum-likelihood method is used to estimate the channel parameters after balanced homodyne detection. Then, Alice can change the intensity of optical pulses adaptively according to the estimated noise level, thereby a steady key rate can be obtained.

通过平衡零差检测后，采用最大似然估计法得到了信道参数，进而根据估计的噪声大小自适应调整Alice发送的光脉冲的强度，从而获得稳定的密钥生成率。

The maximum-likelihood method is used to estimate the channel parameters after balanced homodyne detection. Then, Alice can change the intensity of optical pulses adaptively according to the estimated noise level. Finally, a steady key rate can be obtained.

通过平衡零差检测后，采用最大似然估计法得到了信道参数，进而根据估计的噪声大小自适应调整Alice发送的光脉冲的强度，从而获得稳定的码率。

Spectrometer was adopted to measure the emission spectrum of argon plasma jet at the ignitor exit; boltzmann curve slope method was applied to caculate the jet electron temperature; ionization equilibrium equation was used to caculate jet temperature and measured a law that length, electron temperature and jet temperature of ignitor exit jet length changed with arc current and flowrate.

采用光谱仪测量了氩气等离子体射流在点火器出口的发射光谱，利用玻尔兹曼曲线斜率法计算了射流的电子温度，并通过电离平衡方程计算了射流气体温度，测得了点火器出口射流的长度、电子温度和射流温度随弧电流以及流量的变化规律。

It is found out that the reheat HAT cycle provides the maximum efficiency and the STIG cycle with intercooling and reheat provides the maximum specific work.

利用能量模型〓分析法分析了HAT循环的能量利用，给出了循环的〓平衡模型和能量传递—转换模型，计算了各子系统和各部件的〓损失和效率贡献系数，得出了不同于通常〓分析的结论，指出了HAT循环系统的更合理的节能方向。

Month-old Wulong geese were divided into four groups (8 for each) in a random-designed experiment to study the effect of Euchsaena mexican schrad diet on N equilibrium and digestibility of Ca and P of Wulong geese. Each group was fed with the isoenergetic and isonitrogenous diet of different CF levels (6.02%, 6.86%, 8.66% and 10.41% respectively).

将32只9月龄健康五龙公鹩完全随机分为4组，每组8个重复，各组分别给予不同纤维水平的同蛋白、同能量的墨西哥玉米干草粉结构日粮，采用全收粪法进行消化代谢试验，研究不同水平的墨西哥玉米干草粉纤维素源对五龙鹩的氮平衡及钙、磷消化率的影响。

Synthesis and chracterization of high ordered Ladderlike Polysilsesquioxane Since Brown first reported the synthesis of ladderlike polyphenylsilsesquioxane via "thermal equilibration polymerization"in 1960, it is still a question whether ordered ladderlike polysilsesquioxane can be prepared or not all over the world till now.

第一部分高规整性梯型聚硅氧烷的合成1960 年Brown 首次报道了用&热平衡缩聚法&合成含梯形结构的聚苯基倍半硅氧烷，但该报道受到许多研究者的质疑。至今40 多年来对能否合成真正规整梯形结构的聚倍半硅氧烷一直存在着争议。

The maximum of the L/D appear at about 30-degree angle of attack. The bugle of the reentry module drops the trim angle. Pyrochemistry reaction largen Ca, Cn, diminish L/D and the trim angle. The variational tendency of aerodynamic characters with angle of attack in high altitude (higher than 105km) is different from that of in low altitude (lower than 105km).

返回舱凸出物使配平攻角减小；高温热、化学非平衡效应使轴向力和法向力系数有所增大，升阻比在数值上有所减小，配平攻角略有降低；返回舱0°～180°攻角范围内的气动力特性高空(105km以上)随攻角的变化趋势与低空(105km以下)的变化趋势不同。

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。