半径

By measuring the radius of the standard former which matches the spherometer in the ZYGO interferometer and the CXM100-2W interferometer, use its results to adjust the measure-ring's diameter. We discussed the error source of the spherometer measurements.

针对实验室球径仪长期使用后测量环磨损的问题，提出了利用数字波面干涉仪来标定球径仪的方法，通过测量出球径仪所配的标准样板的曲率半径，来校正球径仪的测量环半径，分析了球径仪测量的误差来源。

A compensation method of ball radius in measuring an arbitrarysectional shape of spiral surface is introduced.

但由于螺旋面的扭曲及测头半径的影响，采用一股的平面曲线侧量方法对测头半径进行补偿和数据处理，求得的齿形其误差较大，很难满足要求；另外，对螺旋面任意截形的测量目前还没有一个通用的补偿计算公式。

It is proved that the obtained radial and tangential stress curve link glossily at hardening zone radius r=R, and softening zone radius r=R and curve of tangential stress σ(subscript θ)/p0-r/α has not up-pinnacled stress concentration especially, the result goes all the way with the experiment result of Japanese scholar Jiuwubosheng.

证明了所求得的巷道围岩径向和切向应力曲线在硬化区半径r=R和软化区半径r=R处均光滑连接，特别是所求得的切向应力σ/p0-r/α曲线没有尖峰向上的应力集中，此结果与日本学者久武胜保的试验结果一致。

Results of estimation of effective parameters in heterogeneous show that: i Seff and Teff values evolve with time, as well as the principal directions of the transmissivity; ii Seff approaches the arithmetical mean of the field; iii Teff converges to its geometric mean at large time for the Gaussian random field we generated; and iv the averages of local T and S values within the cone of depression at early times differ from the Teff and Seff values.

研究结果在空间异质性孔隙介质有效参数的推估方法方面，显示利用传统抽水试验分析来估计有效参数时，从长时间的抽水试验分析所得的流通系数代表在抽水井有效半径内所有流通系数的某种平均值；此平均值与抽水井及观测井附近的地质有很大的关系，而且可能受到有效半径内地质异质性的影响，而储蓄系数的估计值变异很大与抽水井与观测井间地质的储蓄系数特性有关，特别是观测井的位置。

The theoretical curve of the sound directivity which is influenced by the laser beam radius is drawn by the numerical method and drawing software.

讨论了激光束半径对声源指向性的影响，并用数值计算方法和绘图软件，画出激光束半径对声源指向性影响的理论曲线图。

To solve the problem of transversal turnover of the paddy field boat during the cultivation operation, combining the method of theoretical calculation with paddy field test, the kinetic and dynamic characteristics were analyzed and the mathematical model was established according to movement stability in this paper.

为了解决机滚船犁耕作业转弯时的横向倾翻问题，采用理论计算与水田试验相结合的方法，通过对机滚船犁耕作业时的运动学和动力学分析，从稳定性角度出发，建立数学模型。经过分析和计算，求出了机滚船犁耕作业时最小转弯半径的关系表达式，将其运用到1BG-0.9型带铧式犁机滚船上，计算出了该机滚船的最小转弯半径。

In this paper, new approaches were attempted to improve the accuracy in the measurements of both tree ring width and the sectional area of bark.

利用校正系数对传统方法测定的结果进行校正，或者在直径测定时采用符合实际直径的方位；对于有裂隙的树皮（假设内皮厚度为0）的断面积，把目前的去皮半径当作带皮半径进行计算，而不是带皮断面积和去皮断面积之差。

The investigation is based on three methods: the twisted factorization、LU factorization of tridiagonal matrix and expression the block inverse matrix with four block column vectors.

该算法比经典的LU算法约快两倍。研究了非奇H矩阵的谱半径，得到一个非奇H矩阵谱半径的上界估计式。

According to deformation features of tube rolled by SPG mill, The formulas are deduced to calculate geometry parameters of instantaneous deformation zone, flow, slip and deformation.

全面分析了影响力参数的各种因素，提出了关于力参数的计算方法，并对影响轴向力的三个主要因素（轧制半径、摇杆参数和辊颈半径）做了定性、定量的研究，提出了这些参数的确定原则及计算方法。

D1.1 of the AISI Specification limits the maximum longitudinal spacing of connections to ... where smax = maximum permissible longitudinal spacing of connectors L= unbraced length of compression member rI = radius of gyration of I-section about the axis perpendicular to the direction in which buckling would occur for the given conditions of end support and intermediate bracing rcy = radius of gyration of one C-section about its centroidal axis parallel to the web.....

因此，AISI规范第D1.1节限定连接的最大纵向间隙为：，式中 smax =连接体允许的最大纵向间隙 L=抗压构件的自由长度 rI =工字钢对垂直于给定端承和中间肋条件下可能产生纵向弯曲方向的轴的回转半径 rcy =一段U型钢对其平行于筋的质心轴的回转半径。。。。。。。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。