查询词典 radius angle

In this paper,lower bounds on the spectral radius of adjacency matrices of trees and perfect trees are discussed by algebraic method and edge switching of graph,and all trees which reach lower bounds on the spectral radius are obtained.

利用代数方法、图的边变换，以及树的邻接矩阵谱与L ap lacian谱的关系，研究树和完美树的邻接矩阵谱半径和L ap lacian谱半径的下界，给出达到下界的所有极树，得到的新结果改进了文献[2]的结论。

The second chapter studies the spectral radius of unicyclic graphs given order and edge independence number, the spectral radius of bicyclic graphs.

第二章，研究了给定阶和边独立数的单圈图的谱半径，研究了双圈图的谱半径。

Through constructing the function between the radius of a sphere and its auxiliary variables, the radius can be obtained if one of the coordinates of each spherical point is measurable and the other two are constant and unknown.

当球面点的坐标分量之一已知，而另外两个分量固定不变但未知时，通过建立球半径与辅助变量之间的关系，可达到测量球半径的目的。

The curvature radius of optical sphere is an important parameter to determine the properties of an optical sphere. The measurement result of the spherical curvature radius can be used to assess the quality of an optical component.

光学球面曲率半径是决定光学球面光学特性的重要参量，通过测量光学球面的曲率半径，可以审核光学元件设计制造质量。

Rigid circular object 200 mm in diameter with a face having a convex spherical curvature of 300 mm radius with a 12 mm edge radius.

"Rigid circular object"（不知你们做的是什么东西）刚硬的环型物体的直径是200mm并带有一个面，这个面的突起球面曲率是300mm棱角半径为12mm。

Experimental TEA CO2 laser with printed circuit board preionization is used. The laser has gain length of 90 cm. The resonator is composed of a total-reflective concave spherical mirror of curvature radius 20 m and a total-reflective plane mirror of mirror radius 4.5 mm, separated by 5 m distance.

实验中TEA CO2激光器采用印刷电路板预电离结构，增益长度90 cm，腔长5 m，球面全反射镜曲率半径20 m，输出端平面镜半径4.5 mm，得到了内环半径为4.5 mm、外环半径为5.5 mm的基模环形光斑输出。

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。

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。。。。。。。

The results showed that pricking of ventriculus lateralis with syringe needle No.12 did not harm the cerebrium blood vessel within 6 mm radius of injection point and the injected sheep did not reveal harmful affection, but did when pricked out of the radius.

结果表明，在侧脑室进针点6mm半径范围内刺入不易伤及血管脑组织，注射羊不出现临床反应。否则反应剧烈而造成死亡

The radius chosen for the insert is important as this forms the outer radius for the winkle gate.

镶块的半径选择是很重要的，因为这部分形成了螺肉浇口的外半径。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。