| 摘要 |
A corridor spanned or suspended between horizontal support members such as girder members in structures such as those of buildings, ships, etc. so that operators can walk or carry out operations on the corridor. The corridor comprises a main corridor and a sub-corridor, connected to the main corridor to adjust the length of the corridor. This corridor can be easily incorporated in and moved from structures to be built, easily transported and housed in narrow spaces and mounted on different length of places by one unit of the corridor.
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