Firstly, it designs Bogardus social distance scale to measure natives' social distance and the reverse social distance scale to measure outlanders' social distance.
第一、设计对本地人和外地人社会距离进行有效测量的博格·达斯社会距离量表和反转的社会距离量表。
James Bogardus (1800-1874) built the pioneering Cast Iron Building, New York (1848), with a rigid iron frame providing the main support for upper-floor and roof loads.
摩天大楼的先驱是博加德斯（1800～1874）在纽约市建造的铸铁大厦（1848），以牢固的铁骨架主要承载上层和屋顶的负荷。
James Bogardus (1800-1874) built the pioneering Cast Iron Building, New York (1848), with a rigid iron frame providing the main support for upper-floor and roof loads.
摩天大楼的先驱是博加德斯（1800～1874）在纽约市建造的铸铁大厦（1848），以牢固的铁骨架主要承载上层和屋顶的负荷。
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