单词	hodograph
释义	hodograph /ˈhɒdəɡrɑːf / noun Mathematics A curve the radius vector of which represents in magnitude and direction the velocity of a moving object.Look at hodographs derived from 8 a.m. wind speed and direction data for Flint and Peoria.... In the next two chapters it will reveal to us how to scale the hodographs for elliptical orbits. The hodograph of a simple harmonic motion is shown at the left, with the time dependence displayed. Origin Mid 19th century: from Greek hodos 'way' + -graph.
随便看	give someone their due give someone their head give someone the needle give someone the pip give someone the shits give someone the shudders give someone the slip give someone the time of day give someone the works give someone/thing a bad name give someone/thing a (good) run for their money give someone/thing a wide berth give someone/thing best give someone/thing the nod give someone to understand (or believe or know) give someone up give someone up for lost give someone what for give something a miss give something away give something a whirl give something in give something out give something up give something up as a bad job

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。