- astronomical surveying
- 天文测量
English-Chinese electricity dictionary (电气专业词典). 2013.
English-Chinese electricity dictionary (电气专业词典). 2013.
Astronomical survey — Astronomical surveys generally involve imaging or mapping of regions of the sky using Telescopes. In the past,surveys have been usually restricted to one band of wavelengths of electromagnetic radiation (e.g. light or radio) or to measurements of … Wikipedia
surveying — /seuhr vay ing/, n. 1. the science or scientific method of making surveys of land. 2. the occupation of one who makes land surveys. 3. the act of one who surveys: The surveying required nearly two days. [1425 75; late ME: act of examining… … Universalium
astronomical map — Introduction any cartographic representation of the stars, galaxies, or surfaces of the planets and the Moon. Modern maps of this kind are based on a coordinate system analagous to geographic latitude and longitude. In most cases, modern… … Universalium
South African Astronomical Observatory — The Southern African Large Telescope Organ … Wikipedia
Gaocheng Astronomical Observatory — Gaocheng Astronomical Observatory. It was built in 1276. Gaocheng Astronomical Observatory Simplified Chinese … Wikipedia
Screw-cutting lathe — A screw cutting lathe is a machine (specifically, a lathe) capable of cutting very accurate screw threads via single point screw cutting (which is the process of precisely guiding the motion of the tool bit in relation to the rotating motion of… … Wikipedia
ver|ni|er — «VUR nee uhr, nihr», noun, adjective. –n. 1. a small movable scale for measuring a fractional part of one of the divisions of the fixed scale of astronomical, surveying, or other mathematical instruments to which it is attached; vernier scale. 2 … Useful english dictionary
Schiehallion experiment — Schiehallion s isolated position and symmetrical shape lent well to the experiment The Schiehallion experiment was an 18th century experiment to determine the mean density of the Earth. Funded by a grant from the … Wikipedia
mathematics — /math euh mat iks/, n. 1. (used with a sing. v.) the systematic treatment of magnitude, relationships between figures and forms, and relations between quantities expressed symbolically. 2. (used with a sing. or pl. v.) mathematical procedures,… … Universalium
Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… … Wikipedia
Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances … Wikipedia