Changing flat roof to slope roof  平改坡

diagonal ridge for hip roof，vertical ridge for gable roof  垂脊

flat- roof-to- slope-roof  平改坡

flat-roof-to-slope-roof  平改坡

flat-roof-to-sloping roof  平改坡

roof pressure roof weight  顶板压力

roof prism (=roof-angle prism)  屋脊棱镜

layout(or makeup) of a printed sheet，layout， makeup  版面安排

10104 m3 floating roof tank  10104m3浮顶油罐

3-D curved roof  双曲屋面; 话音插控技术

absolute roof  绝对粗糙度

accessible roof  可到达的屋顶; 上人屋面; 有通道的屋顶

accident of the roof  顶板事故

active roof-propping  主动支顶

active-roof fault  主动－顶板断层

acuminated roof  尖顶斜屋面

Added Value for a Swimming Pool on the Roof  屋顶游泳池加价

Advance Large Pipe Roof  超前大管棚

ALC roof board  ALC屋面板