选择值

Conclusion］1? It showes a higher stress dodge in the calcar femorale after using various kinds of prosthesis implantation? After using CFR/PSF of lower elastic modulus as handle, the stress dodge rate is lower in femur, but the interface stress is higher, and this is the main factor and reason for the prosthesis loosening? 2? The stress force rule meets the design principle that the stress force decreases gradually in the bone interface from proximal to distal? The stress value in different combination of same prosthesis handle has no significant difference, that showes mechanical factor is not the main standard for selecting prosthesis combination?

［结论］ 1、各种假体植入后均在股骨距处形成较高的应力遮挡，而用弹性模量较低的CFR/PSF作为柄，其股骨相应区域的应力遮挡率较低，但股骨相应界面应力较大，而界面应力过大是产生假体微动主要因素。2、股骨界面从近端至远端呈逐渐增高趋势的应力规律符合该假体的设计原理；相同假体柄的不同组合其股骨和髋臼相应界面应力值无明显差别，实验表明力学因素并不是选择假体组合的主要标准。

If the user chooses the Cancel button in the dialog box, the return value is NULL.

如果用户选择取消按钮的对话框中，返回值为NULL 。

In order to decolorize the polysaccharide from Cardamine enshiensis ,the hydrogen peroxide was used to be reagent for decolorizing the polysaccharide,and the time,temperature,pH as well as the concentration of hydrogen peroxide were selected to be factors for the experiment of single factor,then the orthogonal test with four factors and four levels was carried out on the aforementioned basis.

为了脱除碎米荠多糖液中的色素，以过氧化氢(H2O2)为脱色剂，选择脱色时间、脱色温度、pH值和过氧化氢的质量百分比浓度等因素为试验因素，进行单因素试验，以此为基础进行4因素4水平的正交试验。

Select those front edges and chamfer them then click apply and chamfer it again but this time with a lower value.

选择前面的边并倒角，然后单击应用并以较低的值再次倒角。

The characteristic exponent based on a probabilistic dynamical system is calculated, which provides some useful information on unstable periodic orbits of the chaotic economic dynamical system. An effective controlling parameter is chosen by discussing the sign of the characteristic exponent. Furthermore, the control regions of the parameter variable are proposed. Therefore the controllable domain of chaos in the chaotic economic model can be obtained.

提出一种等价关系，计算基于概率的动力系统的特征指数，给出混沌经济动力系统的不稳定周期轨道的有用信息，通过讨论特征指数的符号，选择有效的控制参数，得到相应的控制参数取值范围，从而得到混沌经济模型中的参数变量的混沌控制域。

HMO characteristic polynomial and select eigenvalue s for many heterocyclic benzenoids are calculated by using chemical graph theory methods.

应用化学图论计算了杂环芳烃HMO的选择本征值和本征多项式。

HMO characteristic polynomial and select eigenvalues for many heterocyclic benzenoids are calculated by using chemical graph theory methods.

应用化学图论计算了杂环芳烃HMO的选择本征值和本征多项式。

Stand on a base of upper study, this paper choose distribution map of agriculture and stock raising in seven different historical age as basic material, sum up ten agro-geology environmental factors into Loess plateau Area's AEG system, and cover all these factor's component parts map on distribution draft of every period's agricultural and pastrol, then measure the occupying proportion, bring results into fomula of factor information entropy, finally, take average value of ten factor's information entropy in each period as its characteristical AEG system entropy value.

在以上研究的基础上，论文选择黄土高原地区七个历史时期的农牧业分布图作为基本资料，将该区的十个地质环境要素纳入农业环境地质系统中，将其类别分布图与上述农牧业分布图进行叠加量测，结果代入要素系统熵计算公式，求得了十个农业地质环境要素在各个历史时期中的系统熵，对每个历史时期的这十个熵值求算术平均值就获得了该历史时期黄土高原地区总的农业环境地质系统熵。

Being here,you can buy the cheapest and the most valuable chargeable cards,by which you can select and buy the lessons you want on the website.

在这里，你可以买到最经济且实惠的充值卡，通过卡你可以上网选择和购买你想学的任何课程。

If there is a value of chromatic aberration in each group, and a certain relationship between the positive or negative sign of chromatic aberration and the selection of glasses, the secondary spectrum of the whole lens system can be reduced to any small value.

从理论上讲，如果使每一组元产生一定量的色差，并使色差的正或负与玻璃的选择满足一定的关系，则整个透镜系统的二级光谱可减小到任意值。

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％。