the idea behind the experiment is simple: put a spinning gyroscope into orbit around the earth with the spin axis pointed toward some distant star as a fixed reference point .
实验背后的原理十分简单:将转动的回转仪放在环绕地球的轨道,转轴指向远处星体,作为固定基準点。
the shaft is structured to optionally move in the offset cam, and the display panel unit is structured to rotating around a spin axis when the shaft moves in the offset cam.
该轴构造成在偏心凸轮内选择性地移动,并且显示面板单元构造成当轴在偏心凸轮内移动时绕旋转轴线旋转。
a simple proof of six invariants under the transformation of spin axis is put forward.
给出了二次曲面在转轴变换下的六个不变量的简易证明。
over the next century, the subtle effect is expected to cause the northern pole of earth's spin axis to shift by roughly 1.5 centimetres per year in the direction of alaska and hawaii.