查询词典 tracking ball

ANDY RODDICK: There's guys who are consistent, but then there's guys who are consistent when running across the court as fast as they shot tracking down a ball that you've hit as hard as you can, putting it back in play in an effective position.

ANDY：有些人是一贯这样的，但是还有些人总是在赛场上尽量快地跑动以回击你大力打出的球，使他们回到有效的位置。

Able to change his grip to adjust with bounces – even when forced able to slice the old-school squash shot with underspin – Federer's mechanics are at once austere and elegant. His head is always balanced, his eyes tracking the ball keenly, his feet rarely out of position.

能够通过改变握拍来适应不同来球——即便是处于被动，也可以击出下旋球来打开局面，他的击球既严谨又优雅，他的头始终保持平衡，眼睛盯准来球，步伐总是在最合适的击球位置。

Firstly this paper analyses and compares to the methods of target tracking and telemetry in common use, selects and uses the telemetry system that called'reversed GPS', aiming at the difficulties and challenge of ball cartridge examination and reclaim in these circs that the falling point distribution is random and wide extension, or deviates from the Hpredetermined ballistic trajectory and falling on the midway because of multi-target and long-distance aviation in experimental aviation based on traditional radio directional bearing.

结合课题研究背景，本文首先分析和比较了目前常用目标跟踪和定位方法的优缺点以及针对传统无线电定位技术在做飞行测试试验时由于目标飞行距离远、目标数量多导致的目标落点随机散布、范围广和偏离预定弹道、中途坠落等情况下给实弹试验测试和试验弹回收带来的困难与挑战，选用了&倒GPS&遥测系统作为测试测量方案。

Is the acceleration due to gravity the same for both the 19 mm ball and the 13 mm ball?

19mm 小球和13mm 小球的重力加速度是否相同？

"I was trying to get a ball in the air, get a sac fly, because with a runner on third and less than two outs, you're just trying to hit a ball in the air," Jeter said.

因为有人在三垒，而且只有一人出局，你也会想把打向天空。

The results showed that high-energy ball milling led to a drop in the crystallinity of the CMs and a decrease in the size of graphite planar micro-crystals,implying a higher structural amorphism caused by the high energy ball milling.

结果表明，高能球磨处理导致中间相的结晶有序度下降，微晶石墨平面尺寸减小，层间间距增加，说明高能球磨处理促使中间相向无定形结构转变。

Comprehensively making use of the basic theory, such as Space Analytic Geometry, Gear Meshing Engagement Theory, Method of Mathematical Calculation, Theory for Error Analyzing and Data Processing, the author has established the mathematical models of the new method, which has included the analytic mathematical model for precision orientation, the mathematical model for the ball's diameter and the measuring diameter, the mathematical model about the ball's centre, the calculation model for tooth alignment diviations and the model for tooth alignment error evaluation.

本文综合应用空间解析几何学、啮合原理、计算方法、误差理论与数据处理等有关基础理论，推导建立了新方法的数学模型，包括：确定定位关系的解析法数学模型，测球直径与测量半径的数学模型，测球球心的数学模型，齿向偏差的计算模型以及齿向误差的评定数学模型等。

The location of the ball through the linear displacement sensor acquisition, controller position error calculated in accordance with the volume control to control the motor shaft angle, the angle of the control bar so that the stability ball to the target location.

小球的位置通过直线位移传感器采集，控制器根据位置误差计算控制量，控制电机轴的转角，从而控制横杆的角度，使小球稳定到目标位置。

Driver system for the stability of nonlinear and non-use of the theory of linear quadratic control law studies, select the ball location, speed and rod angle, angular velocity of the four variables as state variables, output variables for the ball position and bar angle, the establishment of linear state space equation and after the designs of clubs based on LQR control law, the design process simple and easy to realize the control law, simulation results show that the linear quadratic regulator robustness and stability.

球杆系统翻译，求高人针对球杆系统的非线性和不稳定性运用最优二次型理论进行控制律的研究，选取小球位置、速度和横杆角度、角速度四个变量为状态变量，输出变量为小球的位置和横杆的角度，建立状态空间方程并进行线性化后设计了基于LQR的球杆系统控制律，设计过程简单，控制律的实现容易，仿真结果表明了最优二次型调节器的鲁棒性和稳定性。

The hussars did not look round, but at each sound of a flying ball, as though at the word of command, the whole squadron, with their faces so alike, through all their dissimilarity, rose in the stirrups, holding their breath, as the ball whizzed by, then sank again.

骠骑兵未向四周环顾，但是每当听见炮弹飞过的响声，整个骑兵连队就像听从口令似的，都屏住气息，一些人露出同样的面部表情，另一些人却不同。当炮弹掠空而过时，他们都在马镫上欠起身子，而后又坐下来。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。