短语词组短语Vaned wheel 叶轮vaned outlet 叶片出口风vaned diffusers 风机扩压导流片vaned drum 带叶片的转筒vaned disc 圆盘叶片式vaned diffuser 叶片扩压器；叶片式扩散器vaned diffusor 叶片扩压器vaned damp 叶片减振器vaned volute 有叶蜗壳 返回 vaned