单词underhung
adj.: 下颌突出的；【木工】自下承接的；(拉门)靠轮子拉动的
网络: 下颚突出的；短音圈式；上颚突出的
【木工】自下承接的;(拉门)靠轮子拉动的;在轨道上滑动的
下颌突出的
Rules for construction of cranes, monorails, and hoists (with bridge or trolley or hoist of the underhung type); Addenda
起重机、单轨铁路和提升机的构造规则（带有悬桥或悬挂式吊车或悬挂式提升机）.补充
Patented Track Underhung Cranes and Monorail Systems - Specifications
优质悬挂式轨道起重机和单轨系统。规范
Specifications for Enclosed-Track Underhung Cranes and Monorail Systems
封闭轨道悬挂式起重机和单轨系统用规范
Overhead and gantry cranes (top running bridge, single girder, underhung hoist); Errata
高架和龙门起重机（单梁顶行桥架悬挂提升机）.正误表
Overhead and Gantry Cranes (Top Running Bridge, Single Girder, Underhung Hoist)
高架和龙门起重机（单梁顶行桥架悬挂提升机）