... precession cone旋进锥 precession of a top陀螺的旋进 precession of earth地球的旋进 ...
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?陀螺的进动
） *5.7 陀螺的进动( precession of a top ) 陀螺在绕自身对称高 速旋转时，在重力矩 作用下，其对称轴还 将绕竖直轴OZ 回转， 这种现象称为进动。
双语例句
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It is the result ofa process called precession, where the Earth behaves like a spinning top, which takes 26,000 years and has at the moment moved the zodiac by about a month.