1.The maximum deviation is less than 1.4% in the experimental range between the calculated densities and the tested ones using the Archimedes method.
最后,根据加和法则计算得到BAS微晶玻璃样品的密度,所得的密度值与利用Archimedes法测得的密度值的相对偏差小于1.4%。
2.Scanning electron microscopy (SEM), X-ray diffraction (XRD), Energy dispersive X-ray spectroscopy (EDS), Archimedes and three-point bending methods were employed to characterize and analyze the microstructures and basic mechanical performances of porous Si_3N_4 ceramics.
借助X射线衍射 (XRD)、扫描电子显微镜 (SEM )、X射线能谱(EDS)、Archimedes法和三点弯曲法等方法对多孔氮化硅陶瓷的微观结构和基本力学性能进行了研究。
3.The formation process of the perovskite structure was ana-lyzed by means of X-ray powder diffraction and TG-DSC. The relative density of the ceramics was measured by Archimedes method, and the electrical conductivity of the samples was studied by four-probe technique.
用X射线衍射(XRD)和TG-DSC分析了样品钙钛矿物相的形成过程,用Archimedes排水法测量体积密度并计算烧结样品的相对密度,用四端子技术测量电导率.
4.A DIFFERENCE METHOD FOR SOLVING THE TURNING PROBLEM OF THE ARCHIMEDES HELICES PLATE
Archimedes螺线盘转动问题的差分处理
5.Archimedes was a famous ancient Greece scholar.
阿基米德(Archimedes 约公元前287—212年)是古希腊著名的学者。
6.The relative density, crystalline structure and microstructure of La1-xCaxCrO3 ceramics were characterized by Archimedes method, XRD and SEM. The sinterability of La1-xCaxCrO3 oxides was examined.
分别采用Archimedes法、XRD、SEM等测试方法对La_(1-x)Ca_xCrO_3陶瓷样品的相对密度、晶体结构和显微结构进行了研究，研究了GNP法制备La_(1-x)Ca_xCrO_3样品的烧结性能。
7.This paper discusses the necessary and sufficient condition to represent the Archimedes helix with Bernstein-like basis of order four and five. Under this condition, we can obtain the control points of the Bezier-represented Archimedes helix. Then we can express the Archimedes helix expediently, and obtain the representation of Archimedes helix with control polygon.
本文分别讨论了用4阶和5阶拟Bernstein基表示阿基米德螺线的充要条件,利用这个充要条件,可以得到用4阶和5阶拟Bernstein基表示的阿基米德螺线的控制顶点,从而可以方便地表示阿基米德螺线,实现了阿基米德螺线的控制多边形表示。
8.It utilizes at last Curve surface conjugation theory of differential geometry and normal iso-metric polygonal profile to prove the feasibility of algebra Archimedes screw on scroll compressor profile, And characteristic of Archimedes scroll profile, And has discussed the basic characteristic of the Archimedes scroll profile and processing method.
最后，利用微分几何共轭曲面和法向等距曲线理论，证明了代数阿基米德螺旋型线作为涡旋型线的良好啮合特性，并讨论了阿基米德螺旋涡旋型线的基本特点及加工方法。
9.And in low Archimedes number supply air displacement ventilation room, the length scaleδis not only the function of Archimedes number but also the function of the distant x to diffuser.
同时发现,在小阿基米德数的情况下地板附近的空气层厚度不但和阿基米德数有关而且和距风口的距离有很大关系。
10.The influence of Archimedes spiral curve interpolation on machining precision is analyzed, for the fact that the actual cutter path among the programmed points in the machining of spiral rod is Archimedes spiral curve. On the basis of that, the factors such as the step among the programmed points ,the radius of cutter cirque and the fixed angle of cutter are discussed, the primary factors of influencing machining precision are the section profileof work-piece and the step among the programmed points.
针对螺杆加工中编程点之间刀具的实际运动轨迹为阿基米德螺线的事实，分析了阿基米德螺线插补对加工精度的影响，并在此基础上讨论编程点之间的步长、刀尖圆弧半径和刀具安装角度等因素对加工误差的影响，得出由于阿基米德螺线插补而影响螺杆加工精度的主要因素为工件端截面廓形和编程点之间的步长的结论。
