高度的

The paper includes:The author calculate the structures inner force and displacement of the free end , analyze the influence of the height and the value of pretress of cable by making use of ANSYS 9.0 soft, pose the concept of critical prestress,conclude the function relation between displacement of the free end, initial strain and the height of cable ,analyze the dynamic properity and point out that Newmark-β method should be adopted when we analyze the dynamic properity of the cable-stayed spatial structure with direct integral test to guarantee the contribution of high mode,finally conclude the functional relation among coefficient of earthquake inner force, initial strain and the height of cable, wish to get some helpful conclusion applied to cable-stayed spatial truss design.

本文系统介绍了斜拉空间桁架竖向地震反应的分析理论与方法、详细分析了斜拉空间桁架结构在静力和竖向地震作用下的受力性能，主要内容包括：利用通用有限元软件ANSYS9.0计算了斜拉空间桁架在静力和竖向地震作用下内力及自由端位移分布规律并得出地震内力系数与节间位置、预应力以及斜拉索高度之间的函数关系；详细分析了斜拉索中施加的预应力以及斜拉索高度的变化对于该种结构内力及自由端位移的影响并提出了斜拉空间桁架的临界预应变概念，进而得到了自由端位移与初始预应变以及斜拉索高度的函数关系，即：△=-(40h+2180)ε+9.8；分析了该种结构的动力性能，并指出：在时域内采用直接积分法计算该种结构的动力响应时，应该考虑采用不引起振幅率减小的Newmark-β法，以保证高阶模态响应的贡献仍然保留在响应中而不致于被忽略。

Geoid heights in the conterminous United States range from about -8 meters to -53 meters, and display considerable variation in the mountains.

大地的高度大约从美国范围城关- 8米，-53米，显示高度的变化在群山之中。

The measured parameters including the changes of prevertebral height, the changes of anterior longitudinal ligament strain and the changes of vertebral disc's height; segments including upward and downward of the fractured vertebral bodies were observed.

标本分组，并分别在过伸牵拉、纵向牵引、器械加压三种方式下复位，观察椎前高度、前纵韧带应变值、伤椎上下椎间隙高度的变化。

Objective To compare the forward shift of posterior corneal surface after laser in situ keratomileusis and laser subepithelial keratomileusis in high myopia.

目的探讨高度近视准分子激光原位角膜磨镶术及准分子激光上皮瓣下角膜磨镶术术后角膜后表面高度的差异及意义。

The results show that the reduction of free height of steel 44Si2CrV spring under compressive stress 900 MPa consists of two parts: plastic deformation of surface decarburized zone to hinder elastically deformed internal material recovering, making up 84% of total reduction of free height and creep of steel at ambient temperature makin...

结果表明，44Si2CrV钢弹簧在900 MPa的应力下压缩72 h，自由高度的缩短由两部分组成：表面脱碳层的塑性变形，造成对内部材料的牵制而使部分弹性变形不能恢复，由此所造成的弹簧自由高度缩短占总变形量的84％；钢的室温蠕变，占自由高度缩短的16％。

When the holding height 200mm lower than sugarcane centroid, the sugarcane can not be windrowed outwards, and distance increase with the increasing of the holding height.

当甘蔗夹持高度低于甘蔗质心200mm以上时，甘蔗就不能够向外铺放，随着夹持高度的增加，甘蔗铺放距离减小。

To get optimum power you will need a correct seat height, for a good initial height measure your bare foot insinc from to floor to your pelvic bone; multiply by .883 to get the approximate measurement from the bottom bracket center to the top of your saddle.

为了得到最佳输出力道，坐垫高度必须设定正确，一个设定坐垫高度的公式是

Then windblow sand saltating movement, such as the profiles of sand transport rate and wind speed at different position over slop surface were discussed in detail.

文中还详细讨论了在坡面地表下沙粒跃移运动特征，如坡面不同位置处输沙率沿高度的分布、风速沿高度分布等。

The results of calculations showed that the maximum increments in saltation height and horizontal distance due to the Magnus force were 10.2 and 24.9%, respectively, and that both increments increased with increasing lift-off angle. The maximum increments in saltation height and horizontal distance of sand grains caused by the Saffman force were only 4.6 and 3.7%, respectively. The vertical concentration distribution of Aeolian sand flow follows exponential function distribution whether or not force analysis of saltating sand grains includes Magnus and Saffman force. The effect of Magnus and Saffman force on the vertical concentration distribution of Aeolian sand current makes the rate decrease near sand bed and it is consistent with the effects of Magnus and Saffman force on the saltation height and distance of sand grains.

Magnus力对跃移高度和水平距离产生的最大增量分别可达到10.2%和24.9％，这两个增量均随起跃角度的增加而增大；Saffman力对跃移高度和水平跃移距离产生的最大增量分别为4.6%和3.7%；是否考虑Magnus与Saffman力，风沙流垂向质量百分浓度均服从指数函数分布，Magnus与Saffman力使得风沙流垂向质量百分浓度较不考虑它们的作用呈现出底层的比例较小，上层较大，Magnus与Saffman力对跃移高度的影响基本与其对风沙流垂向质量分布的影响一致，不过Magus力对风沙流垂向质量百分浓度分布影响较大，0-2cm范围内尤为强烈(7.16-10.81)，其他高度层(2-20 cm)的影响相对较小(0-2.95)。

O pressure altitude - set the altimeter at 29.9 in.

压力海拔高度的-设定高度表在二十九点九英寸汞柱。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。