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中心角
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  central angle
     In order to reduce the effect of friction and the flat quality of specimen on test results,the better choice of central angle of the flat is 20°~30°。
     综合考虑摩擦效应和平台加工质量的影响,圆盘中心角以20°~30°为宜。
短句来源
     (2) Through the analysis of perpendicular experiments, three characteristic parameters of bar grating obstructions (the radius of the obstructions r, the width of space b0 and the width of the bar grating b) and two characteristic parameters of spherical obstruction (the radius of the obstructions r and central angle α) play very prominent influences on explosion impulse.
     (2)通过对正交实验分析得出,条栅形障碍物三个特性参数(障碍物半径r、空隙宽度b_0、条栅宽度b)和球袋形障碍物的两个特性参数(障碍物半径r、中心角a)对爆炸冲量都有非常显著的影响。
短句来源
     Calculation of the Central Angle of Pressure Vessel Wound Type Heads
     压力容器缠绕封头中心角计算
短句来源
     By investigating the deviation of the cylinder cam receway fabricated with the generalmethod for a circular knitting machine from the designed curvature equation and the inherentradial inclination of cam raceway herefrom observed,the author gives the following sugges-tion:giving the curvature equation y=Ψ(θ) in terms of the central angle θ as the independentvariable;
     本文对目前所普遍采用的针织圆纬机针筒三角走针跑道的加工方式与设计方程不一致,以及因加工方式本身引起的跑道不良径向倾斜等问题,进行了分析探讨,提出了如下解决途径:在设计上,把方程式表示为以中心角θ为自变量函数 y=ψ(θ)。
短句来源
     So it must be studied whether the Griffith criterion in tensile region is true or not true,and how to choose the central angle of flattened disk. The flattened disks of granite,sandstone,lime and diabase with central angle of 20°~90° are tested.
     对花岗岩、砂岩、石灰岩和辉绿岩,以中心角20°~90°的平台巴西圆盘进行劈裂试验,圆盘不是沿中心线破坏,且抗拉强度随平台中心角增大而增大。
短句来源
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  center angle
     Based on the elastic foundation beam,the control differential equation of tunnel lining is worked out,according to the theory of Saint-Venant,the predominance equation about the center angle to the crack space is established, then the crack space of tunnel lining under the loads can be worked out and according to the crack space,the crack width can be calculated.
     基于弹性地基梁建立了隧道衬砌的控制微分方程,根据圣维南原理推出裂缝间距相应中心角应满足的卓越方程,由此求出了隧道衬砌在荷载作用下产生的裂缝间距,进而确定相同裂缝间距和不同裂缝间距情况下的裂缝宽度。
短句来源
  “中心角”译为未确定词的双语例句
     This author proposes the linear model and the related system, derive the linear expression which includes all the boundary conditions, and obtain the linear relationship between the dam volume function and variables, which meets the requirement of linear optimization of dam shape.
     拱坝体型的线性优化,要求所有的约束条件必须是设计变量的线性函数,作者基于本文提出的线性模型以及所建立的坐标系统,推导了坝体稳定、最优中心角、倒悬要求、拱厚要求、坝面凸性要求、拱端位置要求等约束条件对于设计变量的线性表达式,并得到了坝体体积函数与设计变量之间的线性关系。
短句来源
     Through calculating and experiment,the angle sensor can measure 3 of angle displacement 3 with a resolution of 0.02" by controlling the initial angel of incidence not more than 20",nonparallelism errors under 30",and surface flatness better than λ/4 of the critical prisms two reflection faces. 
     通过计算和实验发现,通过控制临界角棱镜的入射中心角误差不大于20",两平行反射表面的一致不平行度误差小于30",以及反射表面的平面度优于λ/4可以使该传感器在3 测量范围内获得0.02"的分辨率。
短句来源
     Meanwhile, on the basis of the formula of bed shear stress distribution, the influences of the relative radiusof curvature r_o/B, the entrance condition τ_o, the roughness of channel bend C, the relative depth H/r_o,the angle of channel bend φ, the section configuration h/H and other factors to bed shear stress distribu-tion in channel bends are analysed. The derivatives of conclusion are in agreement with the experimentalresults of predecessors.
     依据床面剪切力分布公式,结合前人的一些研究成果,较系统地分析了相对曲率半径r_0/B、来流条件τ_0、河床粗糙情况c、相对水深H/r_0、弯道中心角φ及河床断面形态h/H等因素对床面剪切力分布的影响,所得结论与试验成果是一致的。
短句来源
     113 cases of chondromalacia patellae and osteoarthritis of patellofemoral joint as the group of disorder and 102 young students as the normal group were studied roentgenographically.
     对113例髌骨软骨软化症、髌股关节骨性关节炎病人进行髌股关节合适角、双中心角及沟角的X线测量,并与102名正常人进行对照。
短句来源
     A Method of Defining the Arc's BOX by Using Starting Angle and Center Angle
     由园弧的起始角和园弧中心角确定园弧的BOX
短句来源
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  central angle
In the first the perturbation of the main flow does not extend to the side of the nozzle opposite to the blast: the central angle subtended by the perturbation of the exit section of the nozzle is 2γa >amp;lt; 180 ° (Fig.
      
The effect of the central angle of the unclosed spherical sheath and field source position on the field attenuation inside the closed thin-walled shell is studied numerically for different shell thicknesses and materials.
      
Enlarging the central angle of wedge-shaped segment can make the irregular deformation and dislocations of segments smaller.
      
A set for measuring the maximum weight and the central angle is described.
      
The central angle of the semilunar notch was significantly larger in the dislocation group than in the control group (P = 0.009).
      
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  center angle
Finally, the influence of taper ratio, center angle and arc length on the first two natural frequencies of the beams is illustrated.
      
Coefficient magnitudes in m-level guiding graph as center angle of true scattering behavior is varied.
      
Each element has a center angle to which it is maximally sensitive.
      
The desired broad null is achieved with a null depth of 113 dB at the center angle of 30.
      


A new theory of imaginary lattice planes is proposed to analyse the tra-

本文提出的虚晶面理论是分析透射Kossel花样的新理论。当今流行的透镜理论只是虚晶面理论的一个推论。虚晶面理论的优点:1)虚晶面相应的吸收锥半锥角ф是透镜形花样长度所对应的中心角之半角γ;2)虚晶面的方向是相应透镜形花样的方向。

A circular ring sector with appropriate radii and central angle may be taken as approximate developing pattern of a coil of an undevelopable right helicoid. It has been shown that the relative error of the area of this approximate deve- loping pattern is rather small.

具有适当半径和中心角的圆环扇形可取为不可展正螺旋面一个导程的曲面的近似展开图。本文已证明此展开图的面积的相对误差相当小。

A general formula for calculating the mandrel turning angle between any two points on the geodesie dome is given. The precision solutions and computational results of turning angles on sphere, isotensoid, ellipsoid and cone are presented.

本文给出了一般旋转壳封头测地线上任意两点间的缠绕中心角的通用计算公式,并结合常用封头曲面给出了球面,等张力曲面,椭球面,圆锥面的缠绕中心角方程的解析解及其计算结果,从而为设计由计算机控制的缠绕机提供了理论依据和数学模型。

 
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