single adj.单一的；单个的；特指某人或某物；单身的；单人的；单程的n.单程票；单曲；单人房间；单身者；一元纸币；(网球)单打比赛；(板球)一分打；(棒球)一垒打v.挑选(一个)
双语例句
The crane boom is hexagonal conformation,single cylinder,sequence and synchronous telescoping.The lifting capacity is very good. 吊臂为四节主臂一节副臂，主臂采用大圆弧六边形结构，单缸同步伸缩，具有很好的起重作业性能。
This crane features outstanding characteristics of easy and convenient operation, working stable and reliable.It has one single derrick cylinder, four telescoping booms. 该机起重臂采用单缸变幅，四节臂同步伸缩，中间臂长，起重能力大。
