precession
precession 英 [prɪ'seʃ(ə)n] 美 [prɪ'sɛʃən]
n. 岁差（等于precession of the equinoxes）；先行；优先
名词复数:precessions
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- n. 岁差（等于precession of the equinoxes）；先行；优先
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1. But in reality, the wobble of the Earth on its axis -- which we call "precession" -- has led to them being all out of sync.
而事实情况是，地球在其轴线上的摇动——我们称为“岁差”——让这些星座都偏离了原来的时刻。
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2. That's key to detecting precession, because during each eclipse astronomers can determine the precise angle of the radio signal and therefore the pulsar's wobble over time.
这是探测进动的关键，因为在每次遮挡期间天文学家们可以确定放射线信号的精确角度，并因此断定脉冲星的抖动时间。
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3. The precession frequency goes up.
旋进的频率上升了。
- precession (n.) 1590s, from Late Latin praecissionem (nominative praecissio) "a coming before," from past participle stem of Latin praecedere "to go before" (see precede). Originally used in reference to calculations of the equinoxes, which come slightly earlier each year.
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