different age不同年龄differentadj.不同的；差异的；分别的；各不相同的different vegetation layers不同植被层differentiation positioning差分法定位Different-levels teaching分层次教学Differentiation-Evolution微分进化Different land use patterns不同种植模式different positions of load不同位置载荷different interval sampling不等间隔采样different types of syndrome证型different depths of plowing不同耕作深度differentiation of hymenium子实层分化