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The static natural frequencies and dynamic frequencies (under 3000rpm) are calculated by the finite element method and cyclic symmetry technique. The rotating vibration behaviors of the two models are compared. Different vibration characteristics between the two models are discussed. Geometry mismatch in a turbine blade root, which arose in manufacturing process or caused by wearing out during service, leads to contact conditions changed in fir-tree attachments. As a result, shifting of the fundamental frequencies and redistribution of stress in the blade base possibly cause failure of the blade.

在叶片—轮盘耦合系统振动研究方面，建立了带围带的叶片振动计算模型和带围带的叶片—轮盘耦合系统振动计算模型，考虑旋转离心力作用，采用波传播技术，对两种模型分别进行了整圈模态分析，得到了某汽轮机叶片模型和叶片—轮盘耦合模型在0转速和工作转速(3000rpm)下的振动模态，并对所得结果进行分析比较，讨论了整圈叶片振动模态与叶片—轮盘耦合振动模态的区别。

Through the simulation, the volume distributions, velocity, pressure and hydrodynamic loads on cylinder gate for some instances are obtained. The calculated result is in good agreement with experimental data.

通过数值模拟，得到不同时刻计算域内的相体积分布、圆筒闸体附近速度场、压力场以及各工况的荷载，并与模型试验实测结果进行对比分析，两者吻合较好。

Finally, the values of the OAM of the beam light which have transmitted through the cylindrical lens are also calculated and the results are discussed.

利用傍轴近似计算了这两种偏振态光束通过一个柱面透镜后所具有的轨道角动量。

In the same way, the couple efficiencies of EH11, EH21 and EH12 modes are calculated when the cylindrical mirror is used.

通过对比，得到波导口到反射镜距离d较小的时候，柱面反射镜对EH11模具有与球面反射镜接近的耦合效率。

Besides, two representative temperatures, i.e. integral average temperature and mid-point temperature on cylindrical surface, are also calculated and discussed.

同时，对有限长面热源模型中的两种代表性温度，即热源面的积分平均温度和圆柱面中点温度分别进行了计算和讨论。

According to the structural feature of parallel single disk gate valve,the strength and rigidity of body will be calculated with finite element method,and with cylindroid shell theory .

根据主闸阀结构特点，分别用有限元法和椭圆柱板壳理论公式计算了阀体的强度与刚度，并进行了分析对比，同时对闸板的刚度进行了校核。

Based on the investigation of 38 forest plots in Beijing mountainous region, the niche breadth and overlap of seven rare and endangered herbage plants Glycine soja, Cypripedium macranthum, Malaxis monophyllos, Herminium monorchis, Paeonia obovata, Platanthera chlorantha and Liparis japonica were calculated and analyzed. The results showed that G. soja had a wider niche breadth (0.297), while C. macranthum, M. monophyllos and H.

基于北京山区有珍稀濒危草本植物分布的38块森林群落样地调查数据，对北京山区的野大豆、大花构兰、沼兰、角盘兰、草芍药、二叶舌唇兰和羊耳蒜等7种珍稀濒危草本植物进行了生态位宽度和生态位重叠计算与分析。

Finally, the electronic structure of cysteine with the potential of dipoles is calculated.

计算结果显示，水分子对半胱氨酸电子结构的主要影响是使半胱氨酸费密面以下各能级整体下移了约0.032Ry，并使费密面上的能隙增大了16％。

In this research, the ~ and F2 of the crosses between a natural mutant 慪34?with super-minute grain and 慪38?with super-large grain,慡huhui 881擲huhui 527?with middle grain size were carried out to study the inheritance of the grain shape (grain length, grain width, grain thickness and grain length/width ratio) and 1000-grain weight. The main results are summarized as below:? The F1 grain length, grain width, grain thickness and 1000-grain weight of three crosses were lay between the two parents and tended to Y34, which indicated that those grain traits were all governed by the dominant effect of Y34 and influenced by both female and male parents. The differences of F1 grain length, grain width, grain thickness and 1000-grain weight of positive and negative crosses between Y38 and Y34 indicated the existence of cytogene effects.? The broad heritabilities of major grain traits were calculated.

本研究利用一份水稻极小粒自然突变材料Y34与一份水稻极大粒材料Y38、两份常规籽粒大小材料蜀恢881、蜀恢527的杂交F_1及F_2，对主要粒形性状（粒长、粒宽、粒厚、长宽比）及千粒重进行了遗传研究，根据遗传研究的结果利用微卫星标记结合F_2群分法对控制Y34短粒性状基因进行了分子标记定位，主要结果如下：●各组合F_1粒长、粒宽、粒厚和千粒重介于双亲之间且明显偏向于小值亲本 Y34，这表明粒长、粒宽、粒厚和千粒重均主要受小值亲本显性基因的控制并同时也受大值亲本核基因的影响。Y34与Y38正反交F_1在粒长、粒宽、粒厚、千粒重等性状上存在差异，表明存在细胞质效应。

The two-degree-freedom vibration system made of the main mass and dynamic vibration absorber in deep sea was studied. The mathematics model was built based on the principle of D'Alembert theory, and was calculated with non-dimensional equations.

以深海中附有动力吸振器的两自由度振动系统为研究对象，利用达朗伯原理建立了数学模型，并进行无量纲化运算。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了