roof panel (roofing panel), special cross-section
【机械工程】车顶通风器、换气扇
roof ventilator, ventilation with fans
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相关词条
roofing sheet (roof sheeting)
roof slab, special cross section roof covering
double-pitch roof (pitched roof)
sawtooth roof (north-light roof)
SHEET(S) adapted for roof covering
roof bolting jumbo
crank-operated steel roof