截面线

Here according to the simulative experiments of models whose cross sections were rectangle、square、normal pentangle、normalhexagon respectively, the conclusion is achieved that for non-cylindrical high towering buildings, the collapsing central line is the perpendicular bisector of the linking line between end points of the pre-remained supporting body.

本文通过横截面分别为长方形、正方形、正五边形、正六边形模型进行模拟试验，得出了非圆筒形高耸建筑物的倾倒中心线垂直平分预留支撑体两端点连线的结论。

A method of calculate the characteristic impedance of strip double line is introduced in this thesis.

摘 要：文中提出矩形截面带状双线传输线特性阻抗的计算方法。

The geometrical compatibility condition of the rod was analyzed.

本文研究了线弹性的圆截面压杆在刚性井壁的曲线井中的屈曲问题。

By mean of the method of upper and lower solutions, we will obtain a existence theorem like Kazdan-Warners. Using this theorem, we will study the vortex equation in holomorphic line bundle over complex manifold and prove a theorem of existence of Hermitian metric with a prescribed holomorphic section.

在本论文的最后部分，我们在紧复流形上讨论一类Kazdan-Warner型方程，用上下解方法得到了光滑解存在的Kazdan-Warner型定理，并将其用于研究全纯线丛的涡旋方程，得到了一个具有预定全纯截面的厄米度量的存在定理。

Therefore, bearings with a large cross-section are provided with several short rollers in a line.

因此，有大截面的轴承具有几个在一条线上的短滚子。

To obtain the RCS of dipole-array antennas, the system of electric field integral equations is turned into a linear algebra system whose coefficient matrix is a symmetric block Toeplitz complex matrix by using Calerkin method with pulse basis functions.

为计算线天线阵列的雷达散射截面，用脉冲函数为基函数的Galerkin法将线天线阵列的电场积分方程组转化为一个线性方程组，其系数矩阵是一个对称的二重复Toeplitz矩阵。

By analyzing the characteristic of transition and corresponding stimulated-emission cross section in Nd:YAG crystal, according to the coupling condition of energy transition and material-determined wavelength, reasonable coupling parameters of laser rod and cavity mirrors were designed.

通过分析Nd：YAG的跃迁谱线和相应的受激发射截面的特点，根据多跃迁谱线激光材料波长选择的耦合率条件，合理设计激光棒和腔镜的耦合率参数。

Based on the wall temperature of hollow wire, the further calculation program has been given. It account for the complexity of the stators structure and can be used in the calculation of the temperature distributions in arbitrary cross section of windings.

在空心导线壁温分布计算方法确立的基础上，充分考虑到定子线棒结构的复杂性，采用有限差分的方法编制了通用性较强的线棒截面温度分布计算程序。

The is related to the frequency dependent absorption cross section and the density and spatial distribution of atoms in the lower level of the transition. Position dependent 5P3/2 state densities had been combined with the collisional broadening rate 5P3/2 5S1/2 line due to both helium and cesium perturbers to yield the .The effective radiative rates of the Rb D2 line as a function of the He pressure PHe were obtained . The fluorescence intensity I780 of the 5P3/2 5S1/2 emission was measured simultaneously.

由于辐射陷获存在，有效辐射率是自然辐射率与透射因子（发射的光子在探测区域内没有被吸收的平均概率，它与吸收截面及激发态原子密度和空间分布有关）的乘积。5P3/2原子密度及其空间分布结合5P3/2 5S1/2跃迁线的碰撞增宽计算了透射因子，从而得到了不同He气压下，Rb D2线的有效辐射率。

Stress distribution at cross section of transverse uniformly distributed load and non-uniformly distributed load applied to concrete cylinder by finite element method is analyzed.

采用有限元的方法计算分析了混凝土圆柱体在受横向均匀线荷载和非均匀线荷载时其横截面上的应力状况。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。