Despite the classification, there are more complex factors such as relational closeness, gender, age, and context that can affect how someone views physical contact.
He called for research into the physical causes of mental illness and established the foundations of the modern classification system for mental disorders.
他提倡研究精神疾病的生理成因,并制定了对精神疾病的现代分类体系。
3
Conformance to a particular material classification in this standard requires meeting a number of minimum physical and chemical properties.