Classification by the relation between formation and human activities, there are 36 man-made debris flows and 669 nature debris flows.
按泥石流形成与人类活动的关系分类，有人为泥石流36条，自然泥石流669条。
This article expounds the level of western medicine on disease in the 18th century by discussing the formation of organic pathology, classification of disease, and method of diagnosis.
从器官病理学的建立、西医学对疾病的分类方法，及对疾病的诊断等方面进行探讨，阐述18世纪西医学对疾病的认识水平。
Concept of meteorological scenery is advanced and classification of the resources are initiated by the Way of Formation for the first in China.
提出了气象风景的概念，并在国内首次应用成因类型法对中国气象风景进行了分类。
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