There must be good support for the mast, jib boom attachment, and other fittings.

必须有良好的支持桅杆，臂景气实习，及其他配件。

Any of several parts of standing rigging strengthening the bowsprit and jib boom against the force of the head stays.

艏斜桁撑杆，艏斜桁撑杆支索一种直立索具，用以加固船首斜桁和船斜帆桁，以抵御船头支索力量。

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。

Coleman enclosed track jib cranes are trussed booms mounted on a pivot to allow for boom rotation. The pivot location can be on a floor mounted pedestal, ceiling mounted pedestal, or a wall bracket.

科尔曼挺杆起重机在枢轴位置安装有捆绑臂，可以使臂旋转，这些枢轴可以安装在地上、天花板上，也可以安装在墙上托架上。