jib boom
美
英 
- na.【航】第二斜桅
- 网络起重机悬臂;起重机动臂延伸;吊装臂
英汉解释
英英解释
例句
With one hand I caught the jib-boom, while my foot was lodged between the stay and the brace;
我一只手抓住船首的三角帆衍,一只脚插在支索和转帆索之间。
Confirm danger points of jib-boom on tower crane
塔式起重机起重臂危险点的确定