| 1. | The brief note gave the orbital elements of the hypothetical planet
那张纸上写了那颗假想行星的轨道参数。 |
| 2. | Averaged orbital element
平均轨迹元 |
| 3. | Mean orbital element
平均轨迹元 |
| 4. | Because of this , a set of satellite orbital elements very rapidly " ages " and for accurate predictions must be updated every few days
所以，人造卫星的轨道计算数据会很快就过期，如果你要准确计算它们的轨道，你就必须即使更新它们。 |
| 5. | The secular influence of solar mass - loss on the orbital elements of meteor steams is examined by using the method of celestial mechanics of variable mass in this paper
摘要将作者在变质量天体力学所得理论结果应用于太阳质量损失对流星群轨道根数变化的长期效应上。 |
| 6. | Moreover , before an observer could have used the information to point a telescope , someone would have had to translate the mean orbital elements into actual positions on the sky
而且，即使观测人员想利用这份资料搜寻夜空，还得有人将轨道参数转换成星空中的实际位置，好教望远镜对准。 |
| 7. | Unlike comet and asteroid orbital elements which can be reliably used for many months , satellite orbits are constantly changing due to both orbital maneuvering by the satellite and the effects of atmospheric drag
小行星和彗星的轨道计算数据可以使用数月，但是人造卫星不行，因为它们的轨道会随时被人造卫星自己或者大气阻力所修正。 |
| 8. | In general , ba stars belong to binary system , and their heavy - element overabundances are due to the accreting material from the companions ( the former tp - agb stars and the present white dwarfs ) . carrying out a series of monte - carlo simulations , the changes of orbital elements of binaries are recalculated for wind accretion scenario of the total angular momentum conservation
研究表明，钡星应该属于双星系统，其重元素超丰来自双星吸积，它的伴星已经经历了s -过程核合成，而且由在以前发生的同其伴星(以前是agb星，现已演化为白矮星)的质量传输过程中，从伴星那里获得了富含重元素的物质，这样造成了钡星的重元素超丰。 |
| 9. | The results show that the solar mass - loss extends the semi - major axis , the distance at perihelion and orbital periods of the meteor streams , especially , the extensive influence on the semi - major axis is not overlooked , but this influence on other orbital elements may be neglected
其计算结果表明，太阳质量损失使流星群轨道半长轴每世纪的改变效应较明显，它们同太阳距离的扩大影响值得关注，但对轨道周期的拉长每世纪的影响甚小，对近日点经度只有量级变化小到可以略而不计。 |
| 10. | Our results show that , during the evolution of a binary system , the system widens as it loses mass , and the orbital period increase , while orbital eccentricity remains nearly constant , which can explain the distribution regulation of orbital elements of normal g - k giant and barium stars and the distribution character of the heavy - element abundances of barium stars
计算结果表明，随着星风吸积过程的进行，在星风质量损失阶段系统轨道半长轴将增大，导致轨道周期增大，而偏心率变化不大，由此可以解释普通红巨星双星系统和钡星系统的轨道根数的分布规律和变化情况以及钡星重元素丰度分布特征。 |
