查询词典 spherical bessel function

The truncation order of the spherical cap harmonic model is 8, the pole of the spherical cap is at 36°N and 104°E, and its halfangle is 30°.

冠谐模型的截断阶数为8，球冠极位于36°N和104°E，球冠半角为30°。

The mathematical methods to calculate the theoretical models of satellite magnetic anomalies, spherical harmonic analysis, spherical cap harmonic analysis, rectangular harmonic analysis and equivalent source method, were introduced in this paper.

本文介绍了计算卫星磁异常理论模型的数学方法，即球谐分析方法、冠谐分析方法、矩谐分析方法和等效源方法。

According to the geomagnetic 3 component absolute survey data of China for 1950～1990, and using the method of spherical cap harmonic analysis, this study calculates the spherical cap harmonic models of the geomagnetic residual field in China for 1950～1990 and draws corresponding residual maps.

根据中国1950、1960、1970、1980年和1990年地磁三分量绝对测量资料，使用球冠谐和分析方法，分别计算1950～1990年各个年代中国地磁剩余场冠谐模型。

Geomagnetic field ; Spherical cap harmonic analysis ; Chinese geomagnetic reference field ; Spherical cap harmonic model.

地磁场；冠谐分析；中国地磁参考场；冠谐模型

Based on the geomagnetic survey data in the eastern and central region of China for 1936, and DGRF1935 and DGRF1940, using the method of spherical cap harmonic analysis, the spherical cap harmonic model of the Chinese geomagnetic reference field for 1936(CGRF1936) is calculated.

根据 1936年中国东部和中部地区的地磁测量资料，以及国际地磁参考场DGRF1935和DGRF194 0 ，用冠谐分析方法计算 1936年中国地磁参考场的冠谐模型。

The results show that, with the liquid viscosity increases, the small bubbles retain spherical shape well, while the large bubbles change gradually from the irregular ellipsoid to the form of spherical cap, the periodical oscillation and the bubble terminal velocity decreases.

结果表明，随着液相黏度的增加，小气泡均能呈良好球形，而大气泡则由类似椭球形的不规则形状逐渐向球帽形转变；气泡的周期性振荡趋于平缓，气泡上升终速度降低。

It is incompatible compared with modern streamline artistic frame.The innovation spherical adjustment stem change the turning point above the headset and intergraded with headset cap covered by spherical structure.

创新球体调整角度立管，改以车头碗组处上端为基准点整合了碗组盖及包覆性球体结构，配合双向轨道齿状的咬合设计，达到60度调整范围。

It is the study of the use of spherical coordinates to determine how the objects projected on the celestial sphere depending on the location, and study these changes depending on location laws and causes, offered to time depending on location of celestial calculation of parameters of the basis and method, as all the astronomical observations necessary for the basics, the main means of spherical trigonometry math and matrix operations.

它所研究的是怎样利用球面坐标确定天体投影在天球上的视位置，并研究这些视位置变化的规律和产生原因，提出以时间为参数的计算天体视位置的依据和方法，成为一切天文观测所必需的基础知识，主要的数学手段是球面三角学和矩阵运算。

In this thesis, several kinds of spherical curvature measurement methods are introduced, and the "arch-high and chord-length method" is selected after introduction of the existing methods, and then the novel type of instrument for measuring spherical curvature with the variable ring is developed. In research, the grating sensor, integrated circuits and other new technologies are adopted and integrated. As a result of this, Its specific technical indicator is 0.1um in absolute accuracy, 0.01% in relative accuracy, and 0.001% in repeat accuracy.

本文首先对几种球面曲率半径的测量系统进行了深入的理论分析，在分析了各个测量方法优缺点的基础上，选用了"弓高弦长法"的测量原理，并从理论上推导了本文所述系统的可行性，采用光栅传感器、集成电路等新技术成果，将机械、电子技术、计算机技术以及传感器技术有机结合，研制出一种新型的可变径球面曲率测量仪器。

Spherical four bar mechanism ; Cusped coupler curve ; Spherical Burmester curve ; Instantaneous center

Keywords：球面四杆机构；尖点耦杆曲线；球面布氏曲线；瞬心

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。