居住用建筑物的固定投资额 non residential fixed investment: 住宅以外的固定投资residential structures: 居住建筑物net density of residential structures: 居住建筑净密度prefabricated residential structures: 预制住宅结构nonresidential structures investment: 非卓建筑投资下载手机词典可随时随地查词查翻译