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precession是什么意思、precession在线中文翻译
precession是什么意思 precession在线中文翻译
precession
英 [prɪ'seʃən]
美 [prɪ'seʃən]
precession 词典解释
名词
岁差;旋进;运动
precession 网络解释
旋进
...它不仅用以诊断疾病,MRI是利用含奇数质子的原子核(如1H、13C、19F、23Na)自旋运动(Spin)的特点,置于外加的强大均匀磁场(称为主磁场)内,使原排列杂乱的原子核在磁力作用下而按周围磁场方向排列成行,这种原子核围绕主磁场轴旋转的现象,称为旋进(
precession
)....
precession 英英释义
noun
the act of preceding in time or order or rank (as in a ceremony)
Synonym:
precedence
precedency
the motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
precession
[prɪ'seʃən]
中文翻译
1
n. 岁差(等于precession of the equinoxes);先行;优先
英语释义
1
n. the motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
2
n. the act of preceding in time or order or rank (as in a ceremony)
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