折点

The seat tube and rear fork fold in the longitudinal plan of the bicycle. The wheels roll together until they are side by side by means of a structural feature shaped with a special angle at the bike's center. It can be folded as a Swiss knife.

具简单的结构，折迭方式是由车架的中心点拉起，并同时将车把手往下推，座管和后叉可折迭于脚踏车的纵面，就像瑞士刀一样折收起来。

So if the flex-point in your 9 iron is 10 inches from the hosel, it's going to be in the exact location in your 3 iron.

正常版PX的杆身折点是固定的，3-P都是在杆身连结处的10英吋地方

Velocity profile with an inflectional point is unstable when there is no work input or output to the system, for both inviscid and viscous flows.

3流速剖面的屈折点不稳当没有输入或输出的工作体系，对于粘和粘性流动。

Shapes of spectral distributioncurve in pure Kuroshio region and coastal waters are obviously different.Some inflectionpoints in spectral distribution curve appear at wavelength bands of 412,443,490,520,550,555 and 670nm.

黑潮域与沿岸水的水中辐射光普曲线之形状呈显著的差异，并使得水中辐射照度分布曲线於412、443、490、520、550、555及670 nm波段处出现了屈折点。

In the second chapter several new concepts of elasto-plastic fuzzy stiffness and element are proposed. The fuzzy element matrixes corresponding to the elasto-plastic fuzzy element are also established. In order to use the bilinear and trilinear restoring force modles on analysis seismic responses of structures. A fuzzy mathematical method for dealing with the critical points of the restoring force curve is proposed too.

第二章针对结构在地震弹塑性分析中的刚度模糊性，提出了模糊刚度的概念，并进一步对平面和杆系的弹塑性问题提出了弹塑性模糊单元的概念，建立了相应的模糊单元刚度矩阵；为了利用现有的折线恢复力模型，并且更好地反映结构刚度的过渡性，还给出了用模糊数学处理折线恢复力模型刚度折点的方法。

More and more attention is focusing on the safty of drinking water suply. In this paper, firstly, chloramine formation and the characteristics and kinetics of monochloramine autodecomposition were studied. Secondly, considering the high concentration of ammonia and the complication of organic matters in Shanghai Huangpu River, formation characteristics and rules of disinfection byproducts were reviewed during the breakpoint chlorination process, and on the basis of grading and clssification of organisms, the control effects of chloramination on DBPs formation were studied. Finally, the formation rules of 2-monochlorophenol, 2,4-dichlorophenol and 2,4,6-trichlorophenol from phenol chlorination were investigated, and related influencing factors and kinetics were analysed.

饮用水的安全供给受到越来越多的重视，本文首先进行了氯胺形态以及一氯胺自降解特性及其动力学研究；然后结合上海黄浦江水源氨氮浓度高、有机物成分复杂的特点，研究折点加氯过程中消毒副产物的生成特性和规律，以及在将有机物分级和分类的基础上，研究氯胺消毒对不同类别有机物生成消毒副产物的控制效果；最后考察了氯化苯酚生成2-一氯酚(2-MCP)、2，4-二氯酚(2，4-DCP)及2，4，6-三氯酚(2，4，6-TCP)的规律，并进行了影响因素和动力学分析。

Generally, nitrogen solubility in HNS increases with high pressure, actually it abides by Sieverts rule in low-pressure scope, a difference comes when high pressure and high content alloys elements.

氮在液态铁合金中的溶解度随温度变化存在折点，在不同相中具有不同的变化规律，但总的趋势是氮溶解度随温度升高而增大。

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The formula is suitable for most engineering cast which consist of three disposal styles of tension rod-level tension rod, one break point strut-framed tension rod, two break points strut-framed tesion rod, and consider the boundary conditions effect on the strengthening. Its application also is convenience.

此公式包容了现今预应力法加固工程中多采用的三种拉杆布置型式——水平式拉杆、下撑式一折点拉杆、下撑式两折点拉杆，并考虑到边界条件对加固所产生的影响，具有简便易用，适用面广的特点。

A piece - wise function in the dependence of burning rate on the radiant flux and its break point are important characteristics of burning of double base propellants under external irradiation.

燃速与辐射通量之间的关系可以由两支相交直线构成的线性方程进行描述，其中折点是外界辐射能作用下固体双基推进剂燃烧的一个重要特征。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。