Characteristics of Technological Innovations, 1973

Abstract copyright UK Data Service and data collection copyright owner. To examine the time taken for five major innovations (pneumatic conveying, bulk flour outloading, flour...本数据集的版权归英国数据服务中心（UK Data Service）及数据采集方共同所有。本研究旨在考察五项重大创新技术（气力输送（pneumatic conveying）、散装面粉卸出作业（bulk flour outloading）、面粉……）所需的耗时。