天顶

Astronomy the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day .

从天顶交叉口向西顺着天赤道测量的一个角距离；对在一个特定的地点和特定的时间观测者来说是赤经。

It feel as if we have traveled from nadir to zenith.

感觉上我们好像已从天底走到了天顶。

A point on the celestial sphere directly below the observer,diametrically opposite the zenith.

天底天球上，在观测者垂直向下的一点，与天顶完全相对

Astronomy A point on the celestial sphere directly below the observer, diametrically opposite the zenith.

天底：天球上，在观测者垂直向下的一点，与天顶完全相对

Astronomy the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day.

从天顶交叉口向西顺着天赤道测量的一个角距离；对在一个特定的地点和特定的时间观测者来说是赤经。机会难得！足额稳定绿色激光笔团购！

Observing the ceiling of the Sistine Chapel and the hugely familiar and awkward encounter between Michelangelo's God and Man through their index fingers, Tallis identifies an intuitive indication of the central role of the index finger in making us unique.

其中《创造亚当》是整个天顶画中最动人心弦的一幕，这一幕没有直接画上帝塑造亚当，而是画出神圣的火花即将触及亚当这一瞬间：从天飞来的上帝，将手指伸向亚当，正要像接通电源一样将灵魂传递给亚当。

The Brahmin legends assert that this city is built on the site of the ancient Casi, which, like Mahomet's tomb, was once suspended between heaven and earth; though the Benares of to-day, which the Orientalists call the Athens of India, stands quite unpoetically on the solid earth.

正好她有一个亲戚住在香港，这个亲戚也是帕西人，他是香港的一个大商人，香港虽然是在中国海岸上，但却是一座道地的英国化的城市。火车十二点半到达贝拿勒斯，据婆罗门教的传说，现在的贝拿勒斯是古代卡西城的旧址，卡西城从前就象穆罕默德的陵墓一样是空悬在天顶和天底之间的。

Zenith telescopes, spectrographic instruments and attachments, micrometers, photometers, comparators, coelostats of at least up to 65 cm diameter, and sundials of up to at least 90cm diameter rounded out the product line.

还有大到65 cm物镜直径的天顶仪、摄谱仪及配件、测微计、光度测定器、测远仪、定天镜(注：观测或拍摄天体时镜面与地轴一同转动可使图像固定不动)，大到90 cm物镜直径的日昝仪都出现在蔡司的生产线上。

Modern and practical astronomy was developed in the 18th century, and successively from the theoretical and practical solution to the Sino-satellite instrument measuring time, too Seoul Scott multi-satellite measurements such as latitude, as well as simultaneous determination of longitude and latitude Supreme Court means the emergence of theodolite, contour instrument, the satellite instrument, zenith instrument, photographic zenith tube, sextant and other useful astronomical instruments, the most commonly used is the optical theodolite .20 century, all-round practical field of astronomy 60 years after the emergence of new technologies, such as satellite Dhoop Le observation and satellite laser ranging, not only the accuracy of more than optical observations, but also greatly improved operating speed, and can provide direct point of geocentric coordinates of the ground.

现代实用天文学是18世纪发展起来的，先后从理论和实践上解决了中星仪测时、太尔各特测纬以及多星等高法同时测定经度和纬度的方法，出现了经纬仪、等高仪、中星仪、天顶仪、照相天顶筒、六分仪等实用天文学仪器，最常用的是光学全能经纬仪。20世纪60年代以后实用天文学领域出现了崭新的技术，如人造卫星多普勒观测和人卫激光测距，不但精度超过光学观测，而且作业速度大大提高，并能直接提供地面点的地心坐标。

Starting with the zenith, a series of star fields at different altitude are observed by a telescope with larger field of view, the derivatives of various orders are calculated at different zenith distances, and finally the observational atmospheric refraction can be obtained by numerical integration.

利用一台较大视场的望远镜从天顶开始，在不同高度上对星空作一系列观测，计算不同天顶距处大气折射函数的各阶导数，最后经数值积分可给出大气折射实测值。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。