1.
Kinematic analysis and verification on the decoupled spherical rotating parallel mechanism
解耦球面转动并联机构的运动分析与验证
2.
Research on the motion track of the aspheric optical parts processing based on the tangent rotary method
切线回转法加工非球面光学零件运动轨迹研究
3.
The dynamic characteristics of lunar rover are very complex when the rover steers on soft soil.
月球探测车在月球表面松软土壤上的转向动力学特性比较复杂。
4.
A perfect sphere illustrates an ordinary symmetry, what is known as symmetry under rotations: no matter how you turn it, the sphere looks the same.
完美球面可用来说明一般对称（称旋转对称）不论如何转动，球面看起来都相同。
5.
Self aligning double row spherical roller bearing allows for a higher degree of angular deflection of the drive shaft.
自对正式双列球面滚动轴承允许驱动轴有更高的偏转角度。
6.
spherical union swivel
球面活管接旋转接头
7.
The rotational inertias of uniform rotational rigid surfaces about the around axis
均质旋转面绕旋转轴转动的转动惯量
8.
As if the earth had tilted a bit more and dropped off-centre, spinning the two poles around.
就像地球在绕两极转动时，地面有一点翘起并离开中心。
9.
Backspin: Reverse spin imparted by striking the ball with a downward movement of the racket.
下旋：向下挥动球拍击出的旋转球，使球回转。
10.
universal ball float adapter
万能球形活动头转接器
11.
any rotating body has an angular momentum about its center of mass; angular momentum makes the world go round.
角动量使地球在旋转。
12.
a mask to protect the face of the catcher in baseball.
棒球运动中保护接球手面部的面罩。
13.
four-cup automatic sphere lapping machine
四杯式自动球面研磨机
14.
igning spherical rolling bearing
自动调心球面滚子轴承
15.
This footballer wants a transfer to another team.
这位足球运动员想转到另一个球队踢球。
16.
A Review on the Other Side of Globalization--"Anti-Globalization" Movement;
全球化的另一面——"反全球化"运动再审视
17.
A sharp reversal of direction, as of a ball carrier in football
急转向相反方向急转，如橄榄球比赛中的持球球员的反切动作
18.
turned his chair toward the speaker.
转动椅子面向说话人