学校空间不仅为学校卫生学等知识理论构型的揭露提供了切入点，而且学校空间的实践自身也组成了言说的对象。
School space provided an entry point for the reveal of the structure of the school hygiene theory; and the practice of school space itself became the object of the expression.
采用分层抽样方法，对36所学校、156间教室进行卫生学调查。
Hygiene investigation was carried out in 156 classrooms of 36 schools with stratification sampling.
采用分层抽样方法，对36所学校、156间教室进行卫生学调查。
Hygiene investigation was carried out in 156 classrooms of 36 schools with stratification sampling.
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