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to phrases
先拱后墙法
railw.
arch first lining method
tech.
arched roof in advance of wall tunneling method
;
arched roof in advance of wall tunnelling method
;
Belgian method
;
flying arch method
;
inverted lining method
先拱后墙法:
14 phrases
in 4 subjects
Architecture
1
Engineering geology
1
Rail transport
2
Technology
10
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