... 牵引梁 draft sill 鱼腹梁 fish-belly sill 刀把梁 lowered draft sill ...
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短语
鱼腹式梁
lenticular beam
;
fish-bellied beam
;
Lentiform Beam
鱼腹式横梁
fish belly rail
鱼腹式大梁
inverted bow and chain girder
-
fish belly sill
fish-belly sill
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