用绩效指数比较了不同指点装置的操作绩效，对追踪球的优化设计提出了建议。
According to index of performance, the operation performance of different pointing devices was compared. The implication of the results to the optimal ergonomic design of trackball was also discussed.
用绩效指数比较了不同指点装置的操作绩效，对追踪球的优化设计提出了建议。
According to index of performance, the operation performance of different pointing devices was compared.
目标速度影响鼠标、食指操作追踪球和拇指操作追踪球等指点装置的操作可控性、稳定性和疲劳度。
Target speed has an effect on the operating controllability, stability and fatigue degree of mouse, and the index finger operating and thumb operating trackballs.
追踪球的飞行轨迹可能也是个挑战，尤其是那些打偏了的球(虽然我们说，那个问题并非夜间打高尔夫球所独有的)。
Tracking the ball's flight, too, can be a challenge, particularly for shots that fly far from the target line (though that is a problem that is not, shall we say, exclusive to the nighttime).
追踪我国优秀羽毛球女子单打运动员在新赛制下的表现，研究了新赛制所带来的变革。
The article studies the changes the new rules have brought about through tracing the performance of the first class badminton women single players.
好的球童能做不仅仅是背球杆和追踪打出去的球。
Good caddies do more than carry clubs and track down wayward balls.
相机追踪白球并记录其运动轨迹。
The cameras track the white bobbles and record the way they move into a computer file.
相机追踪白球并记录其运动轨迹。
The cameras track the white bobbles and record the way they move into a computer file.
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