back forth motion的意思|示意

The long serrated knife is often called a bread knife because it is particularly good for slicing breads that require a back and forth sawing motion.

长齿刀经常被称为面包刀，因为人们在切面包时需要前后锯着切面包，长齿刀很适合这个工作。

Move the little man back and forth with the mouse and plot his motion.

用滑鼠前后移动小人，画出其运动轨迹。

Unless a child keeps pumping a swing, the back-and-forth motion decreases;

荡秋千的小孩除非不停地屈伸，否则秋千的运动就会因阻尼而停止；

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.

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。

The spins are then repeatedly flipped, causing the cantilever to gently sway back and forth in a synchronous motion.

这些磁旋反复的翻转，从而导致硅悬臂出现轻微的同步摆动。

When sound waves enter the cochlea, which is really a tube coiled around, they set a membrane into a back and forth motion and cause a new wave.

当声波进入耳蜗这条盘旋的管道，它令薄膜前后移动并且产生新的波动。