gravity coils

例句：

1. 1.The satellite was designed to study the effects of gravity on objects in space.
   这颗卫星被设计用来研究重力对太空中物体的影响。
2. 2. The physicist used a gravity coil to measure the strength of gravity at different locations.
   物理学家使用一个重力线圈来测量不同地点的重力强度。
3. 3.The scientist discovered that the gravity coils were responsible for the movement of the planets around the sun.
   科学家发现重力线圈是行星围绕太阳运动的原因。