| 摘要 |
The invention relates to a method for keeping a mast upright during erection or retraction thereof, the mast being part of a mast assembly additionally comprising a base and a guy control assembly, which guy control assembly allows to keep guy control wires under tension by a single person. The invention also relates to a mast assembly comprising the mast, the base, and a guy control assembly for keeping the mast upright during erection or retraction of the mast.
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