查询词典 zenith telescope

The method does not depend on strict local parameters and precise instruments, while the observational principle is relatively simple. An experimental observation was carried out with a simple telescope with large field of view at Xinglong station of NAOC at the end of 2007. The atmospheric refraction from the zenith distance of 44.8 degree to 87.5 degree is gotten by the differential method, which proves the feasibility of the method tentatively.

该方法不依赖于严格的地方参数和复杂精密的观测仪器，并且观测原理相对简单。2007年底，利用一台简易的大视场望远镜在兴隆观测站进行了试验观测，根据较差方法实测得到真天顶距44.8°至87.5°的大气折射值，初步证明了大气折射较差测量方法的可行性。

Zenith telescope天顶仪It felt as if we had traveled from nadir to zenith.

感觉上我们好像已从天底走到了天顶。

In the first experiment, the rotating angle of the quarter-wave plate is calculated using information about the phase difference, azimuth angle and zenith angle of the telescope.

建立了偏振耦合分光的实验装置，分别用方案2和方案3进行了动态相位补偿实验研究。

Data of latitude observation with the zenith telescope ZTL-180 are recalculated in a homogeneous system for the years 1970-1980. In this Paper the following results are given:(1) Correction of the declination and the proper motion for each pair at 1970.0

对1970—1980年间的纬度观测资料，统一使用IAU1964系统天文常数，按直角坐标法计算全部星对的视赤纬，用统一的公式进行了全部观测结果的归算处理。

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。

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。