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填缝石
archit.
key stone
bridg.constr.
choke stone
;
key-stone
eng.geol.
keystone
tech.
filler stone
填缝〔嵌缝,拱顶,中心〕石
construct.
choke stone
填 缝石:
25 phrases
in 7 subjects
Architecture
3
Bridge construction
1
Engineering geology
2
General
1
Hydroelectric power stations
1
Metallurgy
1
Technology
16
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