查询词典 linkages

The RSSR mechanism with a twist angle of 90°is one of the Spatial four-bar linkages Which finds wide application in practical production.

叉角为90°的RSSR机构是生产中广泛使用的一种空间四杆机构。

A special coordinates to describe the motion features of the linkages based on the generalized coordinates are proposed in this paper. And a structural method on the type synthesis of PKMs is introduced with the analysis on the linkages and the special coordinates.

针对并联机床的构型问题，研究了具有确定末端运动的并联机构支链，在此基础上进行了并联机构的构型研究，并进行了五自由度五轴并联机床的构型； 2。

Permethylation analysis, periodate oxidation,Smith degradation, acetolysis and partial acid bydrolysis revealed the main chains of XP as mannose of (1-6)-linkages and its side chains were mannose of (1-2)linkages.

甲基化分析、过碘酸盐氧化、Smith降解、乙酰解和部分酸水解显示XP的主链是1→6连接的甘露糖，侧链是1→2连接的甘露糖。1H及13CNMR谱表明所有糖苷键均为a型，结合元素分析XP基本是酵母甘露多糖和蛋白质以及锌的络合物。

Depending on the amino acid sequence, the length of the ∝-helical portio are held together by hydrogen bonds formed between r grou , by salt linkages, by hydrophobic interactio , and by covalent disulfide（-s-s-0 linkages.

根据氨基酸顺序的不同，此α-螺旋段的长度也不同，并赋予独特的三级结构，这些折叠部分是靠R基团之间所形成的氢键，靠盐键、疏水相互作用以及共价二硫键而结合在一起的。

A wind- and motor-powered land vehicle with a fore-and-aft longitudinal axis comprising a body supported by wheels, at least one of said wheels fixed to rotate in a plane parallel to the fore-and-aft axis of said vehicle, an airfoil system comprised of two vertically extending airfoils rigidly mounted on said body in an arrangement having bilateral symmetry about a vertical plane through said fore-and-aft axis, said airfoil system providing a forward propelling force of said vehicle when the airfoil system is subjected to certain cross wind conditions, and self-contained motor propulsion means on said vehicle for providing acceleration from a stationary position and for propelling the vehicle either independently or in combination with propelling forces generated by wind action on said airfoil system, each airfoil having a plurality of airfoil sections telescopically fitted together, the lower airfoil section being rigidly mounted in fixed relationship to said body, said airfoil system including a retracting mechanism for lowering upper airfoil sections of said airfoil system when desired and for subsequently extending said airfoil system, said retracting mechanism including a plurality of linkages interconnecting said sections and an actuator means operatively connected between said body and to said linkages for lowering and extending each airfoil, and an intermediate airfoil extending between the upper sections of each of said airfoils so as to provide an inverted U-shaped airfoil.

风力和电动机驱动的陆地车辆与前列和尾部长轴组成的一个机构的支持，车轮，至少有一说，车轮固定在一个旋转平面平行的前列和前后轴的说，车辆，翼型系统组成的两个垂直扩展翼型硬性安装在说，机构在安排后，双边对称约一垂直面说，通过国内外和前后轴，表示翼型系统提供了一个向前推进的力量说，车辆时，翼型系统是受到某些横风条件下，和自我载电机推进的手段就表示，车辆提供加速从一个固定的立场和为推进车辆单独或结合，与推进力量所产生的风的行动表示翼型系统，每个机翼有一个多元化翼型第telescopically装在一起，较低的翼型节被硬性安装在固定的关系，说身体，说翼型系统包括一个撤消的机制，降低上翼型章节说，翼型系统时，理想的和其后再将说，翼型制度，说收回机制包括多元化的联系互连说，部分和一个致动器的手段手术之间的连接说，身体和说，联系降低，并延长每翼型，及一个中间翼型延长之间的路段上的每说翼型，以便提供一个倒U -形翼型。

In market aspect,MNEs have rigidity of market crowding out,can possess market rapidly and potentially,build the bulwark of market entering,while it also has absolute advantage of brands. At the same time,they also develop a pattern of value chain of vertical specialization,by which,Chinas enterprises may have a chance to get into MNEs global value chain and acquire market room. In industry aspect,while MNEs control the industry by stock property and the advantage of brands,they provide a chance of industrial transfer and industrial linkages. Chinas enterprises could strengthen industrial linkages and achieve industrial drive by technology innovation and agglomeration effect. In technology aspect,because of the nature of MNEs technology monopoly,Chinas enterprises must face the dilemma of technology dependence,technology unadaptability and technology trap. But MNEs may also transfer technology to Chinas enterprises by competition effect,demonstration effect and cooperation effect. Moreover,Chinas enterprises could make use of MNEs investment of "oligopolistic reaction"in China to accelerate technology transfer.

在市场层面，跨国公司对中国企业具有市场挤出的刚性，市场占有速度快、潜力大，构筑市场进入壁垒，具有绝对品牌优势，但也在中国形成垂直专业化分工的价值链模式，中国企业获得链入跨国公司全球价值链，获取自身市场空间的机会；在产业层面，跨国公司借助股权安排和品牌优势实施产业控制，但也提供了产业梯度转移和产业关联的契机，中国企业可以通过技术创新和聚集效应，增强产业关联，实现产业带动；在技术层面，跨国公司出于技术垄断本性，使中国企业面临技术依赖、技术非适应性甚至技术陷阱的困境，但也通过竞争效应、示范效应、合作效应对中国企业进行技术转移，中国企业还可以利用跨国公司在华&寡占反应&投资，加速技术转移。

As to the mate lag problems in loom beat up mechanism,comparing traditional four bar linkages with quick return four bar linkages beat up mechanism,the latter can solve the lag problems effectively.A CAD method of designing the quickreturn four bar linkages beat up mechanism is pointed out,and the design mathematics model and the kinematic analysis model are also presented.

针对现有织机打纬机构和开口机构在运动配合上存在的滞后问题，比较了传统的四连杆打纬和具有急回特性的四连杆打纬机构，基于后者能有效地改善配合上的滞后问题，提出了精确设计具有急回特性的四连杆打纬机构的CAD方法，给出了设计的数学模型、机构运动分析的数学模型。

Results from different groups showed oat β-glucan have β-(1,3) and(1,4) glycosidic linkages,and these two glycosidic linkages are regularly presented in oat glucan chain.

燕麦β-葡聚糖是在高尔基体中合成的，但β-葡聚糖的合成过程目前还不清楚，β-葡聚糖合成酶可能是合成过程的关键酶。

Finally, the new approach is extended to synthesis planar six-bar linkages, so that a unified model is established from synthesis of planar four-bar linkages to that of planar six-bar linkages.

本文最后将平面四杆机构综合方法推广到平面六杆机构的综合中去，建立了从四杆到六杆的一致的优化模型。

Continuation--Optimization method is proposed for approximate synthesis of linkages The synthesis of planar four-bar and six-bar linkages are studied using this method and several solutions are obtained. Thus, selection of the optimum solution for approximate synthesis of linkages is realized.

提出了机构近似综合的连续---优化法，并应用该方法研究了平面铰链四杆及六杆机构的函数综合，得到了多组机构尺寸方案，实现了机构近似综合的多方案优选。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。