薄壁的

Thin-walled tube with closed section is commonly used in large space structures. In order to calculate the time-dependent temperature fields in these structures subjected to heat flux and emitting thermal energy by radiation, the temperature gradients along both the axes and circumferences of the tubes should be considered.

薄壁闭口管是大型空间结构中的常用元件，为准确地计算以其为组件的空间结构在太空辐射换热条件下的瞬态温度场，必须同时考虑沿管轴向与横截面周向两个方向的温度梯度。

A curve coordinate system which is suitable for variable height curved box-girder were established. The flexure, torsion and distortional warping displacement functions were established, and the strain-deformation equations were obtained, a spatial finite element analysis method of trapeziform cross section variable-curvature box-girder with vertical symmetrical axis was also presented.

建立适合于变高度曲线箱梁的曲线坐标系，推导了变曲率、变高度箱梁弯曲、翘曲扭转和畸变的位移方程和应变-位移关系式，提出了具有一个竖直对称轴的变高度变曲率曲线箱梁的薄壁曲梁空间分析有限元方法。

Be based on more accurate wedge thin wall component is inflectional and academic, the crankle of the wedge bridge that linear to bearing change carries curved rules effect is inflectional undertook a large number of analysises, put forward new wedge I-steel computation of curved rules of Liang Lin group is formulary.

基于较精确的楔形薄壁构件屈曲理论，对承受线性变化端弯矩功能的楔形梁的弯扭屈曲进行了大量分析，并提出了新的楔形工字钢梁临界弯矩计算公式。

In addition, the deflector can increase critical Reynolds number of the aerodynamic drag coefficient graph.

安装导流罩使得气动阻力系数曲线上的临界雷诺数增大；设置薄壁式的导流罩底边和驾驶室顶面之间的间隙，可以增强导流罩的减阻效果。

We can produce various kind of diamond core drill segment. Also according to different type of bricks and concrete (especially for reinforced concrete with different aggregate), we can adjust of segment to reach maximum speed and life.

我们能生产多种类型的薄壁钻刀头，并能根据不同标号的砖混结构，水泥及沙石（软硬花岗岩、石英石和鹅卵石）调整配方，以达到相对应的速度和寿命的要求。

And with decrease in light intensity,the shape of palisade mesophyllchanged from column into invert pyramid.The higher proportion of granum thylakoid,more granum in one ganum thylakoid and lower ratio of chlorophyll a to chlorophyll bwere also the responses of leaves to shading.

在庇荫环境中，栅栏组织薄壁细胞由全光的柱状变成倒锥形、叶绿素a/b率显著降低、叶绿体中基粒类囊体所占的比例提高、每个基粒类囊体垛的片层数量增加等，也是幼树提高叶片对弱光利用能力的主要标志。

The Conclusion can be drawn that the method can be applied to the determination of the temperature of a hot wire embedded at the center of a cylinder.

经数值计算验证，本方法可对薄壁高温的加热圆柱体轴线上的热导线的温度给出高精度的定量检测结果。

In chapter six, A finite element model to evaluate the mechanics properties of thin wall structure is put forwards. The 4-node quadrilateral Hughes-Liu shell element with five through-the-thickness integration points is employed. The material is assumed to satisfy the elastic-plastic yield condition with isotropic hardening. The single surface contact algorithm is taken to deal with the contact searching. The priori stabilization procedures for the numerical control of the hourglass instability and the penalty method for the evaluation of contact force are used. The classical Coulomb law of friction is employed to evaluate the friction force.

第六章采用法向方向5点积分的4节点Hughes-Liu壳单元，前置参数法砂漏控制技术，等向强化弹塑性材料模型，分步增量应力回映方法，一体化接触搜寻算法，罚参数接触力计算方法及经典摩擦定律，建立了一种计算受冲薄壁结构大变形力学特性计算的有限元模型，通过对汽车A传动轴及汽车纵向方形吸能梁的大变形力学特性分析，验证了该有限元模型的正确性。

Pekinensis . IAA at concentration of 0.4-1. 0 mg/L in solid MS medium incited many adventitious roots on hypocotyl segments. The earliest anatomic changes were observed on cut surface of hypocotyl segments under optical microscope 24 hours after IAA treatment: cytoplasmic and nuclear density became higher in a few of parenchytmatous cells adjacent to phloem in tissue of pericycle, followed by cell divisions.

在生长素诱导24h后，可借助显微切片观察到下胚轴切面附近明显的解剖学变化：首先是中柱鞘内靠近韧皮部的薄壁细胞的细胞质与细胞核变浓，染色加深，部分细胞分裂；随后是分裂的细胞团增大，逐渐形成根原基并分化出根冠。

Golden Delicious using a combination of carboxyfluorescein transport, immunogold electron microscopy, and immunoblotting assay.

利用 Western Blotting 和胶体金免疫电镜定位技术，对苹果果实中参与卸载的己糖转运蛋白和酸性转化酶在韧皮部及其周围薄壁组织中的定位进行了研究，并初步研究了脱落酸对己糖转运蛋白表达量的影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。