第一个是任意球——我记得那时我(替换下场)坐在替补席上看见他摆球时就预感到他要进球了。
The first was a free-kick - I remember being sat on the bench [after being substituted] at the time thinking he was going to score when he was lining it up.
通过实时记录摆球的位置,得到了不同初始条件下,弹簧摆振动的位移曲线、能量曲线和摆球运动的轨迹。
The graphs for the displacement, energy and the trajectory of the bob are gotten by recording the position of the bob in real time under different initial conditions.
常出现一些模糊认识,即认为单摆在振动中所受的回复力就是摆球所受重力与绳子拉力的合力,显然,这是错误的。
To state the restoring force of a simple pendulum during oscillation is the resultant force of the gravity of the ball and the pulling force of the thread is wrong .
该设计基于牛顿摆的工作原理,它的特点是把若干个大小相同的金属球并排地悬挂在一起,并使这些金属球相互之间非常勉强地相互接触。
The design is based on the Newton's cradle, which features several identically sized metal balls suspended so that the balls barely touch each other.
极快的挥拍速度是我们在击打上旋角度球或突然摆短球时使用这款球拍的一个乐趣。
We found racquet head speed easy to generate making this racquet a joy when hitting topspin angles or when taking a rip at short balls.
李佳薇正手位正胶的低球突击非常有质量,加上身高优势和出众的摆速,她能够给所有高手制造不少麻烦。
Li Jia Wei is being hand-rubber ball attack is very low quality, together with the height advantage and superior speed ahead, all she can to master a lot of trouble to create.
很多选手没有多考虑他们的后摆,他们专心于击打母球。
Most players don't give much thought to their backswing. Their focus is primarily on hitting the ball.
保证你对于所有的来球可以有充分的 回摆,然后接触球,并且跟进。
Make sure you have a solid backswing, contact and follow through on all shots.
有时球员推球时有点无精打采,这样会缩短摆?圈,进而造成过早的时间差。
Sometimes bowlers will get a little lazy with their push away. This will shorten the swing cycle and tend to make the bowler have early timing.
甚至在恶劣的球中,裁判员酌情呼吁停止。而裁判规则,不论是草地的角落,或是击球手是否检查他的摆幅。
Even in base ball, umpires have discretion in calling strikes. The umpire rules whether the pitch was on the corner or whether the batter checked his swing.
重力俘获。球摆,杠杆,离地时的摩托车。
Gravitational capture, rod-pendulum, lever, motorcycle lift-off.
重力俘获。球摆,杠杆,离地时的摩托车。
Gravitational capture, rod-pendulum, lever, motorcycle lift-off.
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