| 摘要 |
Device (1) for construction of predominantly continuous tunnel: The device consists of a mobile main driving mechanism (2) and the first excavator of the cylinder's tube (3), which is fastened to the main driving mechanism. As the main driving mechanism (2) moves forward so the excavator in (3) adapts itself progressively and forms a spiral excavation in the outer tube (1) made of metal, and creates a predominantly [sic] continuous tubular tunnel.
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