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PROFILE FOR THE IMPLEMENTATION OF THE SAFETY AND OF DIFFICULT METAL PROFILES INCLUDED IN THE RACE PROFILES
PROFILE FOR THE IMPLEMENTATION OF THE SAFETY AND OF DIFFICULT METAL PROFILES INCLUDED IN THE RACE PROFILES
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机译:赛车轮廓中包含的安全性和困难金属轮廓的轮廓
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摘要
In a method of constructing a retaining screen which is intended to retain soil and debris dug from the ground when excavating a shaft into which concrete pipes, cables and the like are to be laid, and also to retain such soil and debris subsequent to excavation, there are used so-called ''planks'' in the form of profiled aluminium sections (30) which are carried singly from a storage site and placed in a vertical, upstanding position and then driven singly into the ground, to form shaft supporting walls.
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