基本解释[经济学]年冲刷率英汉例句双语例句At the same time, we successfully estimated the annual erosion rate by applying the theory of "gray system"model GM (2, 1).用灰色系统的GM（2，1）模型，本文较为成功地预测了年际间的侵蚀率。annual erosion rate更多例句专业释义经济学年冲刷率