1) libration period
天平动周期
2) translation period
平动周期
3) diurnal libration
周日天平动
4) astronomical cycle
天文周期
1.
All of them are thought to be essentially related to astronomical cycles, except the megasequence which may be caused by the long term geothermal cycles on cratons.
除大层序可能是由克拉通规模的热旋回引起的海平面相对变化所造成的外，其他级别的层序可能主要由全球海平面变化旋回所控制，并与天文周期有关。
5) Weather period
天气周期
6) Astronomical period
天文周期
1.
In this article,the control of astronomical periods on the basal-level cycles,as well as methods of the identification of astronomical periods and the division of cyclic sequence by discrete wavelet transformation and spectrum analysis are probed.
探讨了天文周期对基准面旋回的控制作用及应用离散小波变换和频谱分析技术识别天文周期并划分旋回层序的方法。
2.
According to the corresponding relations between ratio of sedimentary cycle thickness and ratio of astronomical period, the sedimentary cycles related to individual astronomical period are ascertained, and the time limitation of these cycles restricted by absolute geologic age.
根据沉积旋回厚度比例关系与天文周期比例关系之间的对应性,判断出与各天文周期相关的沉积旋回,并在绝对地质年龄约束下估算出各沉积旋回时限。
补充资料：天文方位角(见大地天文测量)
天文方位角(见大地天文测量)
astronomical azimuth
哭骂措嘿羔一cal azi一彻见大地天文侧量。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条