在18世纪你可以把海盗系在桁杆上吊死。

Hanging pirates from the yardarm is so 18th-century.

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介绍了神钢7100履带吊臂杆桁杆的修理过程，提出臂杆更换中的注意要点，为起重机臂杆桁杆修理提供借鉴。

This paper introduces the overhaul procedure of Shengang7100 crawler-type crane boom trussed pole, proposes the attention point during exchanging the crane boom trussed pole.

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整个结构划分为若干组合单元，每个组合单元包括拱、桁梁及竖杆横撑架三部分。

The structure is resolved into several compound elements and every compound element consist of three parts: arch, trussed beam and lateral brace.

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