jib boom 第二斜桅 ; [机] 起重机悬臂 ; 起重机动臂延伸 ; 后斜帆桁
flying jib boom 艏斜杆
Jib boom stroke 吊臂伸缩量
jib boom guy 前帆横杆支索
jib boom track 前帆横杆拉曳索
jib-boom crane 装配吊车
jib boom crane 装置吊车
Jib Boom Attachment 臂景气实习
N a spar forming an extension of the bowsprit 船首斜帆桅 [nautical]
With one hand I caught the jib-boom, while my foot was lodged between the stay and the brace;
我一只手攀住三角帆，一只脚夹在绳索和转帆索的缝隙中。
Also known as the amplitude limit or range indicator, jib cranes general boom are linked to a range of indicators.
也称变幅限位或幅度指示器，一般的动臂起重机的起重臂上都挂有一个幅度指示器。
From a distance, the long boom and white jib combine for impressive reach.
从远处，长期繁荣和白臂相结合，为达到令人印象深刻。
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