【perihelion】的音标、怎么读

perihelion怎么读

中考高考考研四级六级雅思托福 GRE

perihelion是什么意思

音标: 英 [ˌperɪ'hi:lɪən] 美 [ˌperɪ'hi:lɪrn]

n. periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun

n. 近日点, 最高点, 顶点

1. But we're on course to take advantage of the orbital eccentricity and meet it at its perihelion.

但我们正准备利用轨道偏心率并在其近日点达到要求