| 摘要 |
The boom assembly has a boom member and a stock member of box constructions with the stick member pivoted to the boom member adjacent the top of an upright extension provided at the free or forward end of the boom member. The actuating cylinder for the stick member is located within the boom member, and the actuating cylinder for the boom member projects transversely therethrough adjacent its rear end for pivotal connection with the upper wall of the boom member.
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