查询词典 parallel bar

Circular and catenary always represent the shapes of minor principal stress soil arch between two parallel walls, but which shape should be used in the calculation of active earth pressure on two parallel walls remains disputed. Considering fully developed wall friction or partially developed wall friction, circular and catenary, the two shapes of minor principal stress soil arch between two parallel walls are theoretically analyzed. According to the shapes of soil arch, the coefficients of earth pressure corresponding to different angle of internal friction and that of wall friction are obtained, and the formula of active earth pressure on two parallel walls is derived.

鉴于计算平行墙间侧土压力时关于土体小主应力拱形的选择尚存在争议，考虑墙土摩擦角充分发挥和部分发挥两种情况，对平行墙间土体小主应力圆弧拱和悬链线拱分别进行了分析，得到了对应于不同内摩擦角和墙土摩擦角的侧上压力系数，以及平行墙间侧上压力的理论公式。

A new design for a 3-DOF parallel manipulator has been conceived in the form of the architecture of the Cassino Parallel Manipulator [3] by using four-bar linkages in the legs and a symmetric design in order to obtain a user-friendly design and easy operation, although parallel manipulators may have complex design and nonintuitive operation.

一台3－DOF 并行操作器的一种新设计已经被以Cassino 并行操作器的建筑的形式设想 [3]为了获得一种便于用户操作的设计和容易的经营通过在腿和一种匀称的设计里使用4 间酒吧的连杆，虽然并行操作器可能有复杂的设计和nonintuitive 操作。

This paper takes a kind of parallel robot with 2-DOF actuation redundancy as the object of study and according to the spatial model of the parallel robot mechanism and the reverse solution of dynamics,the relationship between the function target of output speed of the tip of this parallel robot mechanism and the dimensions of bar components was probed.

以一种平面2自由度驱动冗余并联机器人为研究对象，根据该并联机器人机构的空间模型和运动学反解，探讨了该并联机器人机构的末端输出速度性能指标与杆件尺寸之间的关系，并绘制了相应的性能图谱，这些图谱是该并联机器人机构设计的重要参考依据。

A multiple-step beams model was established to analyze the static stiffness characteristics of the double parallel four-bar mechanism with right angle flexible hinges based on the symmetry of the structure. Formula for calculating the static stiffness was derived by applying singularity function. On the basis of this analysis, the factors influencing the stiffness performance of the double parallel four-bar mechanism were studied from its geometric parameters, and the theoretical model was verified by finite element method.

根据其结构的对称性建立了静刚度分析的阶梯梁模型，引入奇异函数法推导了柔性双平行四杆机构的静刚度计算公式，在此基础上，分析了柔性双平行四杆机构各尺寸参数对其静刚度的影响，并采用有限元方法对理论模型进行了验证。

In order to calculate the crack expansion life in the action of variable amplitude load for the metal bar with V-shaped notch, the formula of bar fracture frequency was obtained theoretically by setting a size of bar fracture region applied in the engineering. Based on it, the mathematic expression of crack expansion life of bar V-shapednotch tip in the action of variable amplitude load was built.

针对金属棒料在变幅载荷作用下需要较精确地获取其V形槽尖端裂纹扩展寿命的问题，通过给定一个工程上能接受的瞬断区尺寸，获得了棒料断裂频率的计算公式，在此基础上，建立了变幅载荷作用下棒料V形槽尖端裂纹扩展寿命的数学表达式。

A new method of the design for tie bar and falsework during the construction of the thin-wall of bridges;2. Study on the Dowel and Tie Bar in Jointed Plain Concrete Pavement;3. In order to overcome the problem of early failure of the tie bar in the plastics injection molding machine, an integrated finite element analytic model was formulated dealing with the tie bar s,fixed platen, movable platen, and rear platen.

针对注塑机拉杆的早期断裂问题，为使拉杆应力分布合理化，以拉杆与定模板、动模板和调模板等组成的整体有限元分析模型为基础，用优化方法研究拉杆卸载槽的合理位置以及各模板基本厚度的确定，以及拉杆卸载槽的位置和各模板基本厚度对拉杆应力分布的影响。

At present, the supply line merchandise - mask-type bar code scanners, laser bar code scanners, bar code light pen , bar-code reader, magnetic card readers and electronic cash register relevant surrounding.

光罩式条码扫瞄器以其半成品模组和系列成品产品在市场上闻名，其中半成品模组销售到全球各地S/I和电子收银机制造商

Financial management passes outstanding achievement of the knot of day of day of knot inquiry, cash, member that receive silver 3 big edition piece let Internet bar owner do business to the Internet bar state know sth like the palm of one's hand, it resembles be Internet bar controller " clairvoyance "" clairaudient " the management state that assists its to master an Internet bar at any time.

财务治理则通过日结查询、现金日结、收银员业绩三大版块让网吧业主对网吧营业状况了如指掌，它就像是网吧治理者的"千里眼""顺风耳"帮助其随时把握网吧的经营状况。

The origin、 development and present state of the container ship2. The deformation characters and collapse mode of the container ship3. The basic theory of thin-walled structural mechanics: The bending of the thin-walled beam; The unconstrained torsion of the thin-walled member bar; The constrained torsion of the thin-walled member bar with opening; The constrained of the thin-walled member bar with closed port.4. The calculation of the warp stress in the container ship based on the thin-walled structural mechanics theoryModeling of the hull ladder calculation based on referred mechanics theories of thin-walled member bar, calculation of crankle character of the each section, such as sectional coordinates、 Free twist shear flow、 secondary shear flow、 bend shear flow and so on.

本文主要包括下述六个方面的内容： 1 集装箱船的起源、发展和现状 2 集装箱船变形特征和破坏形式 3 薄壁结构力学的基本理论◇薄壁梁的弯曲；◇薄壁杆件的自由扭转；◇开口薄壁杆件的约束扭转；◇闭口薄壁杆件的约束扭转 4 利用薄壁结构力学理论计算集装箱船的翘曲应力建立船体阶梯计算模型，利用薄壁杆件力学中相关理论，求解各断面单元的弯扭特性，包括：扇性坐标、自由扭转剪流、二次剪流、弯曲剪流等。

In debouch bar, heterogeneity in bar side is the most serious, and that in bar host is more serious, and that in bar top is middle.

其中在河口砂坝内，侧缘储层的非均质性最强，坝主体次之，坝顶部则呈中等非均质性。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。