tidal adj. 1.潮汐的;潮水(似)的。 2.由于潮水作用的,定时涨落的;开船时间视潮汐而变动的(客船班次)。 His speech caused a tidal wave of indignation throughout the country. 他的演说在全国掀起了怒潮。
variation n. 1.变化,变动。 2.变量,变度,偏差。 3.【语言】语尾变化;变体,异体;【数学】变分,协变;顺列;【生物学】变异,演变,变种;【音乐】变奏曲;【天文学】变差;(月的)二均差;【物理学】磁差。 a principle without variation 不变的方针[原则]。 be capable of variation 可能变化。 be liable to variation 容易变化。 These prices are subject to variation. 上列价格可能变更。 adj. -al
Observation and study of the tidal variation in gravity field 重力场的潮汐变化观测及其研究
Harmonic method : the representation of tidal variations as a sum of harmonics known as constituents each of different frequency , amplitude and phase 调和法:将潮汐变化分解为不同频率,振幅和相位角的谐波(即分潮)的方法。
Tidal variations are mainly caused by the gravitational attractions of the moon and the sun . near new moon or full moon each month , the earth , moon and sun are aligned along a straight line and the sea - level rise and fall will have a larger range . this is called a spring tide 潮汐变化主要受月球和太阳的引力影响,每月的新月或满月前后,地球月球和太阳三者连成一线,水位会升得特别高和降得特别低,这现象称之为大潮或天文大潮。
Tidal variations are mainly caused by the gravitational attractions of the moon and the sun . near new moon or full moon each month , the earth , moon and sun are aligned along a straight line and the sea - level rise and fall will have a larger range . this is called a spring tide 潮汐变化主要受月球和太阳的引力影响,每月的新月或满月前后,地球、月球和太阳三者连成一线,水位会升得特别高和降得特别低,这现象称之为大潮或天文大潮。