小型起重机无动力缓降机构的创新设计
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1673-940x|volume|6|77-78
ISSN: 1673-940x
Source: 科技创新与品牌, Vol.volume, Iss.6, 2015-01, pp. : 77-78
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Abstract