三角学的

Using simple trigonometry, from the observed angular displacement of the star''s measured position and knowledge of the distance between Earth and Sun the distance of the star can be calculated.

使用简单的三角学理论，通过观察到的恒星移动的角度，以及已知的地球和太阳的距离，恒星的距离就能计算出来。

Spherical trigonometry is a part of spherical geometry, mainly in the processing, discovery and interpretation of polygons on the spherical surface contact angle and the edge and relevance.

球面三角学是球面几何学的一部分，主要在处理、发现和解释多边形在球面上的角与边的联系和关联。

Ah specifically, the angle of the sphere and the relationship side of spherical geometry, spherical trigonometry is a part, mainly in the processing, discovery and interpretation of polygons on the spherical surface contact angle and the edge and relevance.

具体一点啊研究球面上的角与边的关系球面三角学是球面几何学的一部分，主要在处理、发现和解释多边形在球面上的角与边的联系和关联。

Complete Principle of Measurement , as the basic literature of large calendar mathematics series Chongzhenlishu, was the beginning of the Western trigonometry, spherical astronomy and measurement into China, involving area, volume measurement, flat triangle, spherical trigonometry and spherical astronomy's theory as well as measuring instruments'applying. Complete Principle of Measurement embodies Chongzhenlishu's axiomatic mathematics and astronomy and makes a contribution to the further spread of the Western learning.

《测量全义》作为编撰大型历算丛书《崇祯历书》的基础文献，是西方三角学、球面天文学及测量术系统传入我国之始，涉及面积、体积测量，平面三角、球面三角和球面天文学的基本理论以及测量仪器的制造和使用等，是《崇祯历书》中公理化数学和天文学体系的体现，为西学的进一步传播做出了贡献。

It is the study of the use of spherical coordinates to determine how the objects projected on the celestial sphere depending on the location, and study these changes depending on location laws and causes, offered to time depending on location of celestial calculation of parameters of the basis and method, as all the astronomical observations necessary for the basics, the main means of spherical trigonometry math and matrix operations.

它所研究的是怎样利用球面坐标确定天体投影在天球上的视位置，并研究这些视位置变化的规律和产生原因，提出以时间为参数的计算天体视位置的依据和方法，成为一切天文观测所必需的基础知识，主要的数学手段是球面三角学和矩阵运算。

A correction formula for target deviations is derived by using the coordinate transform and its suitable conditions are proposed. Experiments show that it is coincident with the spherical trigonometry well.

分析了目前采用的脱靶量修正模型的适用条件，采用坐标变换法推导出经纬仪脱靶量修正公式，获得了与球面三角学相一致的推导结果，并在此基础上推导出成像系统无照准轴平行约束条件的通用脱靶量合成公式。

Metin Tolan, a physics professor at the University of Dortmund, has written a formula based on trigonometry which analyses all Germany's results from previous World Cups and predicts a winner for this year's tournament.

这位物理学教授建立的公式基于三角学，通过德国队在往届世界杯中的成绩来预测今年的冠军归属。

Harpsichord羽管键琴】A stringed instrument resembling agrand piano but usually having two keyboards and two or more strings for each note and producing tones by the plucking of strings with plectra.

一种卧式竖琴型或梯形的键盘乐器，类似三角学钢琴，但通常有两层键盘(部门为一层，及其个别亦有三层)和两套或更多的弦(每一套发出差别音质的音)，通过羽管或皮制拨子(拨子连接一顶重器，一般为一根直立的木杆)拨弦，赖琴键内端推动发声。

Note that Hipparchus used geometry and trigonometry to change astronomy from a set of unrelated observations to a precise observational science.

我们必须注意到是Hipparchus首先利用几何学及三角学，把天文学从一大堆杂乱无章的数据资料，转化成一门精确的观测科学，而托密勒则创建了太阳系的地心说。

Because thanks to these schools our early mechanics, especially in the New England and Middle Atlantic states, were generally literate and at home in arithmetic and in some aspects of geometry and trigonometry.

this往回复指前述的最后内容，也就是前一段末句谈到的&技工们有文化并且熟知算术、几何学、三角学&，从而可知这种教育优势就是熟练掌握数学。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。