aerial element meaning in Chinese

天线振子

First of all , from empirical point of view and through investigation and analysis , it summarizes present conservation conditions and current operation system while preserving historic districts and analyzes exiting problems and the dilemmas encountered with the cases of conservation over the past two decades as background . secondly , through an analysis of aerial elements and conservation operation levels , it develops a systematic view , integration view and synthetic view in conservation of historic districts , utilizing three - fundamental operation theory , constructing a general frame of integration system in conservation of historic districts
首先，以二十余年来历史街区保护为背景，从实证研究角度出发，通过调研分析总结历史街区保护现状和现行运行机制，分析历史街区保护中存在的问题和面临的困境；然后，树立历史街区保护中的系统观、整体观和综合观，通过对历史街区空间要素以及保护运作层次的分析，运用三元运行理论，建构历史街区保护机制的总体框架。