Chromium-plating of ball influence the ball service life and strength of ball arced groove;
球体镀铬对圆弧槽强度及其使用寿命的影响
Whet device development of small size and hard seal ball valve;
硬密封球阀球体研磨装置
Using the analytical method and the finite element method, the paper has calculated curve characteristics of transborehole synchronous apparent resistivity survey for spheroids and two-dimensional tabular bodies, and presented an imterpretation method.
用解析法和有限元法计算了球体、二维板状体跨孔同步视电阻率测量曲线特征，并提出解释方法。
First-order heaving force and pitching moment on spheroid in the stratified ocean are calculated with boundary-element-method.
球体在水下运动时会受到内波对其产生的作用力 ,从而产生大幅度的垂荡和纵摇运动 ,影响其操纵性 ,但这一方面的研究还很不成熟 。
Dynamic formation and bifurcation of cavitation in an incompressible sphere;
不可压缩球体空穴的动态生成和分叉
The object considered is a uniform,rough,rotating sphere.
在对均匀密度的粗糙球体和常用的窄带散射函数模型进行分析的基础上,研究了对于球体模型的宽带扩展函数(WBSF)及其与球体相关的参数,讨论了通过使用小波变换方法来处理模型中存在的奇异值,最后,通过计算接收信号的小波变换对宽带扩展函数进行估计。
This paper presents the method of drawing shade and shadow of sphere based on the principle of projective geometry.
目的为确定球体在有灭光线下的透视阴线,和画球体透视阴影的作图方法,使曲面体的透视阴影画法得到进一步完善。
A sphere or spherical object.
球体球状物体或球体
the surface of a sphere, a ball, the earth
球体、 球、 地球的表面
In this way the sphere is transformed into an ellipsoid.
于是球体变成为椭球体。
equivalent sphere
当量球体, 等效球体
The earth is an oblate sphere.
地球是一扁圆球体.
To assume the shape of or form into a sphere.
以球体出现，成球状
The earth is shaped like a ball.
地球的形状象个球体。
The earth is a spheroid and not a sphere.
地球是一个椭球而非球体。
A bacterium having a spherical or spheroidal shape.
球菌球形或回转扁椭球体形状的细菌
move, as in hockey or soccer.
在曲棍球或足球等运动中移动球体。
A body with the shape of a sphere, especially a representation of the earth in the form of a hollow ball.
球，球状物球体，球状物，尤指中空的球的形式的地球仪
The earth is not a perfect sphere.
地球不是一个很圆的球体。
(sports) the act of swinging or striking at a ball with a club or racket or bat or cue or hand.
（体育）用球棒、球拍、球棍、手来击一个球。
Hockey, volleyball, football and tennis are all sports.
曲棍球、 排球、 足球、 网球都是体育项目.
A discussion on the all-in-one of receiving after changing"small"table tennis ball to the"big one"
从乒乓球“小球”改“大球”看接发球“一体化”
Physical control of the ball or puck by a player or team.
控球球员或球队对球或曲棍球的身体控制
The earth attracts all matters;and all matters attracts the earth.
地球吸引一切物体，物体也吸引地球。
The spectators at a court-tennis match.
全体观众庭院网球球赛的全体观众
