查询词典 synodic

We have derived their synodic periods and estimated the shape and orientation of rotational axis for one asteroid. In this thesis, several aspects were involved:(1) Why do we study the asteroids?(2) Based on two classical photometric models of the asteroids, the luminosity variation of the asteroids were introduced.

为了了解小行星的光度这个物理量，在第二章中介绍了两种经典的小行星光度模型，讨论了小行星光度随相位角的变化及冲效应对光度的影响，分析说明了引起小行星光度变化的若干因素。

Astronomical yearbooks and calendars for amateur astronomers provide the times of the beginning of the synodic solar rotations as well as the longitudes Lo.

天文年历和日历为业余天文学家提供了太阳会合自转周期的始时和经度Lo。

An eclipse year (346.62 days) does not come close to being an exact multiple of these periods (324.83 days in eleven synodic months, 354.36 in twelve).

一个食年（346.62天）并不接近于准确的周期倍数（11个朔望月324.83天，12个朔望月354.36天）。

Synodic month 朔望月 The time taken for the moon to reappear at the same ecliptic longitude of the Sun as seen from Earth, which averages 29.53 days.

月球连续两次到达与太阳相同黄经的时间。一个朔望月平均有 29.53 日。

Taking Mars in the Jiyuan Li (1106) as an example, the result shows that the average error of its mean geocentric longitude in a synodic period is about 4'.

具体算法由两个步骤组成：首先，按照行星与地球绕日匀速运动的假设，来推算行星视运动的地心平黄经；然后，对平黄经进行修正，由此获得所求时刻行星的地心真黄经。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。