叶2或3羽状复叶,通常具附件,背面浓密白色被绒毛的小叶通常。
叶子二回羽状,基部的具通常具3小叶,或很少羽状复叶;
1·Therefore, the model of human ear and the hearing effect are introduced, and the influence of Hass effect, pinnae effect, reflection and reverberation to the hearing is analyzed too.
因此,介绍了人耳听觉模型和听觉效应,分析了哈斯效应、耳廓效应、反射与混响等因素对听觉的影响。