基本解释[經濟學]年沖刷率英汉例句雙語例句At the same time, we successfully estimated the annual erosion rate by applying the theory of "gray system"model GM (2, 1).用灰色系統的GM（2，1）模型，本文較爲成功地預測了年際間的侵蝕率。annual erosion rate更多例句专业释义經濟學年沖刷率