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In this thesis, the basic theory and methods for the determination of geoid is introduced. Then the main error sources for the determination of geoid are analyzed and the error transmission formulas are given.

本文简要介绍了确定大地水准面的基本原理和常用方法，并对影响大地水准面精度主要误差源进行了分析，给出了误差传播的计算公式。

This paper is divided into two parts: The first part focuses on Shuxingjiehe thinking, focuses on the history of Shuoxingjiege thinking of the sources, definitions and principles of teaching the second part focuses on Geometer's Sketchpad in Shuoxingjiehe thinking of the application of the status quo , On how to strengthen the Geometer's Sketchpad Shuxingjiege thinking in the application of the discussion.

本文主要分为两部分：第一部分内容侧重于数形结合思想，主要论述了数形结合思想的历史来源，定义和教学原则；第二部分着重于几何画板在数形结合思想中应用的现状分析，对如何加强几何画板在数形结合思想中的应用进行了讨论。

In a digital environment where all the data sources are geometrically registered to a common geographic base, the potential for information extraction is extremely wide.

在数字环境下的所有数据源的几何注册到一个共同的地理基础，潜在的信息提取非常广。

Meanwhile, utilizing cells derived from same germ layer to functional replace the original cell types in the defect area has provided a great hint for seeking new cell sources.

而利用发育同源细胞在特定组织为环境下向特定细胞的转变以实现功能上的替代，为寻找种子细胞来源开辟了新的思路。

His origins are unusual one mixture, Germanic and Latin, which we glimpse in its sources of inspiration.

他的出身是一个不寻常的融合，日耳曼和拉丁人，我们能够瞥见其来源的灵感。

They get the colors from different natural sources: roots, leaves, and so on.

他们从不同的天然资源：根、叶等等，获取颜料。

Various sources explain the role of the ghostwriter and how competent writers can get this kind of work.

各种消息来源解释作用，以及如何代笔作家可以胜任这项工作。

This study was conducted to determine the effects of different energy sources and energy levels on estrus ratio, age of puberty ,body composition and estrus behavior of gilts.

它传递体内的营养状态和能量储存信号到中枢神经系统，在调控动物初情期启动的时间上占据一定的地位，但瘦素的作用机理目前还不清

It sources directly from around 1,700 farmers in the north of Tanzania and contracts a ginnery for the ginning of the seed cotton.

它的来源直接从大约1700个在坦桑尼亚和对种子棉轧花合同一轧棉厂北方农民。

This first video examines fashion and glamor lighting using just 1 or 2 light sources.

这是流行的魅力照明方案，有时候尽管只用1个或2个光源。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。