Historically , a cornerstone of classical empiricism has been the notion that every true generalization must be confirmable by specific observations 历史上，经典经验论立基于此一观念之上：每个真实的归纳命题必须能被个别观察所证实。
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2 . as the premise of urban land rearrangement planning , research on selecting rearrangement zone was carried on , including its principle , acting procedure , decision - making method and steps , etc . 3 . the target and its confirmable principle of urban land rearrangement planning were put forward definitely 城市土地整理区的选择是城市土地整理规划的前提条件，对整理区选址原则、运作程序、决策方法及其步骤等进行了详细的研究。
