折点 meaning in Chinese
break point
carpus
kink
salient point
Examples
- Kinked demand curve
有折点的需求曲线 - With 6 electric voltage fold point designed , it could make tracking sign 5 lines output
6个电压折点设计，使跟踪信号的细分达5线输出。 - In order to input chinese character naturally from keyboard , our next step is presenting a new input method named " stroke simulation " . the main idea of the method is inputting the feature points of a stroke , such as up - point , twist - point and down - point , instead of inputting a stroke directly from keyboard . the trail of the feature points we extracted from a stroke shoud be able to shape the stroke . the most attractive point of this method is that it allows users input strokes continually without an extra key to separate two continuous strokes
为了在键盘上实现汉字的自然输入，论文提出一种“模拟笔划”的汉字输入新方法，这种方法特别适用在目前信息产品上广泛使用的数字小键盘上，它不直接在键盘上输入汉字笔划，而是根据笔划的形状特征和运笔方向输入汉字笔划的起点、折点和落点等笔划特征点。 - 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 condition ' s 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。 - The main work of this paper was as fellows : ( 1 ) generalized the development of pre - stressed steel structure in our nation and abroad , and pointed out the main problem in practice ; ( 2 ) presented the mechanism of pre - stressed steel structure and revealed its applicable range ; ( 3 ) established the optimization design model for pre - stressed steel structure , which accounts for constraints on stresses and displacements of structure ; ( 4 ) brought forward the optimization design method , which combined linear programming and the principle of full restriction , through which we can obtain the magnitude of each time pre - stress and the optimized sections of each members of structure ; ( 5 ) analyzed the best times of pre - stress and pointed out that 2 ~ 3 times is preferable ; ( 6 ) conducted optimization design on large - space steel roof , horizontal parallel steel truss with local cables , horizontal parallel steel truss with global cable , and ultra - static steel truss , the result of which indicated that the multiple pre - stress structure is very economic ; ( 7 ) compared different schemes of cable placement for horizontal parallel steel truss , and the results showed that the local cable only unloaded the second girders , but had no response on the first girders and stomach poles , while global cable could unload the second girders and the stomach poles outside of turning point of cable , thus proving that global cable is more economic than local - cable
本文的主要工作是：对国内外预应力钢结构的发展历史及现状作了综述和总结，指出当前预应力钢结构工程实践中存在的主要问题；阐述了预应力钢结构的受力机理，并指出预应力钢结构的适用范围和特点；在考虑结构应力和变位约束的条件下，建立预应力钢结构优化设计模型；提出多次预应力钢结构优化设计方法和步骤，采用线性规划和满约束准则相结合的优化方法，可优化设计出施加的每一级预应力的大小，并得到结构各部分的优化截面；对多次预应力最佳的施加次数作了分析，并建议以2 3次为宜；为验证文中理论和方法，分别对大跨多次预应力钢屋架、局部布索的水平平行弦钢桁架、整体布索的水平平行弦钢桁架和局部布索的超静定钢桁架等算例进行了优化设计，经济效益明显；对水平平行弦钢桁架的几种施加预应力的方案进行比较，对于局部布索，预应力只对下弦起到卸载作用，对上弦和腹杆基本不起作用；而整体布索预应力除对下弦卸载外，对索折点以外部分腹杆也起到卸载作用，经济效益好于局部布索。