heterogeneous group meaning in English

异质群体

Depressive disorders are a heterogeneous group of conditions that share the common symptom of dysphoric mood .
抑郁性疾患包括一组具有心情忧郁这一共同症状的若干情况。
Asian economies are still , in many ways , a rather heterogeneous group
亚洲经济体系在许多方面仍然有很大分别。
Depression in late life represents a heterogeneous group of mood disturbances that may present with variable features
老年忧郁症是由一群不同原因所造成情感困扰的疾病，并可表现出各种不同的特徵。
Ld students is a specially heterogeneous group , and the problem of learning disabilities is a common problem to those countries that are preceding free educational system
学习困难学生是一个特殊的异质群体，学习困难问题是世界上每一个实施义务教育制度的国家普遍存在的问题。