Astronomy served many purposes. for one thing, it was needed to keep a calendar . 天文学有许多用处，其一是要用它来算出历书。
2.
Apart from these, the contents are largely as self-explanatory as the well-known calendars for the amateur's use . 除此而外，历书的内容对于业余天文学来说是一目了然的，就象我们看日历一般。
3.
He published the journal annually from 1791 to 1802 1791到1802年，他每年出版一本历书。
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Antenna open and short circuit detection and protection 时间和历书。
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An annual publication including calendars with weather forecasts , astronomical information , tide tables , and other related tabular information 年历；历书一种年度出版物，包括含天气预报、天文信息、潮汐图表和其它相关表格信息的日历
6.
In other words , in silko ' s almanac of the dead , tribal history is evoked to challenge the dominant hegemonic discourse and ideology , whereas cosmopolitan spirit ( s ) is recognized as that which has already been inscribed into the mind of native people since time immemorial 其《死者历书》中，一方面唤起部族历史以挑战霸权式论述与意识型态，他方面则不忘直指原住民祖灵重视的宇宙世界主义精神，与当代所宣扬的善待异己的世界主义观念若合符节。
7.
Thirdly , an ideal satellite orbit is simulated , and on this foundation , we establish some typical simulation and testing circumstances . lastly , after simulation in the simulation and testing circumstances , we compare the performance of ukf and ekf . and then , based on the outdoor experiment of the vehicle , an analysis and contrast between our simulation results and commercial data process software is carried out , and the conclusion is obtained 首先在第三章提出的目标运动模型的基础上建立了系统状态方程;其次简要分析了卫星导航系统中的各类误差,建立了基于伪距观测量的系统观测模型;第四节利用yuma格式历书数据模拟了未受摄动影响的卫星轨道,并在此基础上建立了几种典型的动态仿真测试环境;第五节为仿真分析和比较,先对ukf算法和ekf算法在动态仿真测试环境中进行了仿真比较,然后针对外场试验,对非线性滤波获得的定位结果与商业软件进行了分析比较,并得出结论。
8.
In sum an infinite great fall of rain and all refreshed and will much increase the harvest yet those in ken say after wind and water fire shall come for a prognostication of malachi s almanac and i hear that mr russell has done a prophetical charm of the same gist out of the hindustanish for his farmer s gazette to have three things in all but this a mere fetch without bottom of reason for old crones and bairns yet sometimes they are found in the right guess with their queerities no telling how 简言之，大雨无尽，万物复苏，丰收在望。然而见多识广者云：据玛拉基114之历书，风雨之后预测将有火灾吾闻拉塞尔先生本着源于印度的同一要旨，为其“农民报” 115撰写预见性咒文，三者不可缺一此乃无稽之谈，仅能迷惑老妪小儿而已，但偶尔立论亦能恰当中肯，实为奇妙。
