这种往返运动使听筒前的空气以同样的方式做往返运动。
This back-and-forth movement of the disc causes air in front of the receiver to move back and forth in the same way.
新式双锥型研磨腔体设计，可使研磨珠自动往返运动，确保研磨珠分布更均匀。
New double conical grinding chamber design, make grinding beads in the conical chamber flow in a linear way, enable distribution to be more uniform.
本装置不用任何外部件对气缸进行换向，就能达到高速往返运动，能使物体快速移动。
No external part is required by the device for reversing the cylinder, and the high-speed back-and-forth motion can be achieved, so that an object can move fast.
采用直流电机驱动通过夹料装置在轨道上的链条作来回往返运动，夹料为弧形夹料装置，分为液动及气动。
DC motor drives chain of the material holding device on the rail to run in a reciprocating way, arc material holding device is used, of hydraulic or pneumatic type.
我可以做些安排，这样她就可以享受开车往返家和学校的特权，而且只能开小型货车（不是运动型轿车）。
I could set something up so that she could exercise the privilege of driving only between home and school, and only in the minivan (not the sport sedan).
宇宙的周期运动是同样的，从一个时代到另一个时代往返不已。
The periodic movements of the universe are the same, up and down from age to age.
当居民所住的地方有公交火车通行时，那里的居民通常比较苗条。这是因为往返于公交站点之间增加了运动量。
Residents tended to stay thinner when a commuter train was added to their region, because of increased exercise walking to and from stops.
发球和往返连续击球是这项运动的基本内容。
运动员的个人基本技术包括发球、往返拍击、反手扣杀、正手扣杀和短、轻吊球。 击球准确地控制落点也是非常重要的。
The basic individual skills include serving, volleying, the backhand smash, the forehand smash and the drop shot. Accurate placement of shots is also very important.
游戏的主体不是游戏者而是游戏本身，游戏是种秩序是种往返重复的运动。
The play subject is the play but is not the player. Play is Order and is a move repeat movement.
羽毛球运动员的个人基本技术包括：发球，往返拍击，反手扣杀，正手扣杀和短、轻吊球。
The Basic individual skills 0f a Badminton player include:serving, volleying, the Backhand smash, the forehand smash and the drop shot.
运动员的个人基本技术包括发球、往返拍击、反手扣杀、正手扣杀和短、轻吊球。
The basic individual skills include serving, volleying, the backhand smash, the forehand smash and the drop shot.
羽毛球运动员的个人基本技术包括：发球，往返拍击，反手扣杀，正手扣杀和短、轻吊球。
The Basic individual skills 0f a Badminton player include: serving, volleying, the Backhand smash, the forehand smash and the drop shot.
工作台带动工件往返做直线运动，电机输出动力带动抛光轮旋转接触工件进行抛光，抛光轮上加固体或液体两种抛光蜡作为抛光介质。
Workbench drives workpiece for linear running to and for; polishing machine provides power to drive polishing wheel to turn and polishing wheel as the polishing media.
工作台带动工件往返做直线运动，电机输出动力带动抛光轮旋转接触工件进行抛光，抛光轮上加固体或液体两种抛光蜡作为抛光介质。
Workbench drives workpiece for linear running to and for; polishing machine provides power to drive polishing wheel to turn and polishing wheel as the polishing media.
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