半径的

This paper presents a new method——using mean radius of curvature to find the substitutive arc of Archimedes spiral,with which better precision can be obtained and the calculating formulas are very simple.

提出了一种用平均曲率半径法求阿基米德螺旋线的代用圆弧的新方法，其计算公式简单，并可得到较高的精度。

Based on measured surface topography in conjunction with theoretical analysis, the characteristics of surface during wear process are studied, and the asperity density and asperity curvature radius are given for the first time.

本文通过对缸套表面的实测和分析，研究了在磨损前后表面形貌的变化，并首次定量描述了微凸体密度、微凸体曲率半径及其沿高度方向的变化。

Table 4 Lattice structure, atomic radii, electronic configurations, electronegativities andpositron bulk lifetimes of Fe, Cr, Mo and Al lattices

为便于讨论合金元素对Fe3Al合金缺陷组态和电子密度的影响，我们把Fe、Cr、Mo和Al的电子构型、晶体结构、原子半径、电负性[10]及正电子在其金属基体中的寿命值[11，12]列于表4。

By contrast, Au atoms with a larger nuclear charge but a similar atomic radius to silver owing to the lanthanide contraction are able to have a stronger interaction with CO.

这主要是因为镧系收缩产生的结果：与银相比金带有更多的核电荷，但是因为镧系收缩原子半径却和银几乎一样，因此更容易跟电子给予体的一氧化碳相互作用。

The chelate structure was examined by AFM scaning, single strand structure at AFM gram is Ala-Gln, two combined single strand is Ala-Gln-Zn~(2+), and atomic radius of Ala-Gln-Zn~(2+)'s conjunctive atom is about 0.24 to 0.25nm, which is near to Zn~(2+), so the conjunction atom is Zn~(2+). Thus the coordination reaction and the molar ratio 2:1 is proved again.

原子力显微扫描指出，大量出现的单一弯曲链状结构是Ala-Gln分子，而两两组合连接的链状结构，则是Ala-Gln-Zn~(2+)螯合物，且连接两个链状结构、半径约为0.25nm的中心原子是Zn~(2+)，证明Ala-Gln与Zn~(2+)形成配位比为2：1稳定螯合物。

Based on the shortest distance between the cylinder cutter axis and surrounding surface, the maximum gouging was obtained by comparing with the radius of cutter.

提出的柱刀干涉检测是基于最短距离的求取算法，获得刀轴与加工面间的最短距离，进而与刀具半径比较得到最大干涉量。

Murphy completely hulked out, killed everyone in the gun nest, then used their weaponry to kill every baddie in a 100-yard radius, including two more machine gun nests and a bunch of snipers.

莫非无敌在暴怒下变身升级，干掉了机枪工事里的所有敌人，然后用他们的武器消灭了半径100码范围内的所有坏蛋，包括另两个机枪工事和一帮狙击手。

Bears blades that form with their longitudinal axis to the radius of the base piece an angle of 8° 40'.

刀片的纵轴与基件的半径形成8° 40'。的角

They are common optical measurement and their distributions are obtained from the large sample data. Beta distribution is used as a unified distribution to simplify the research of optical measurement distribution.

通过对光学测量中常见的叉线对准以及焦距、曲率半径测量进行大样本数据采集和分析处理，利用实验方法得到常见光学测量数据的分布，并选择Beta分布统示表示多种分布，简化了光学测量中的分布研究。

We also studied the resonant Raman-scattering in the ZnCdSe/ZnSe QWs with different well width, and found the Raman signal can be only observed in the QWs with width comparable to the Bohr radius of the excitons in the ZnCdSe QWs, which implies the strong correlation between the electrophonon interaction and the quantum confinement effect.

通过采用不同宽度的量子阱，我们研究了ZnCdSe/ZnSe单量子阱的共振喇曼散射特性，发现共振喇曼散射信号只在阱宽与激子玻尔半径相当的单量子阱中（5nm和2.5nm）才能观察到。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。