Only a handful of bridges have major support beams made from them .
只有少数桥梁采用纤维增强塑料的主体支撑梁。
As most readers doubtless know , h beams are the standard unit of steel used in construction .
如同大部分读者所知,工字梁是建筑中钢材的标准单位。
The cathedral-like central hall of london 's natural history museum boasts a towering arched ceiling ribbed with exposed iron beams and adorned with hundreds of hand-painted tiles depicting plants and animals .
The plans submitted included high-tech designs involving materials such as " compressed earth brick " and steel mesh ; a dome-shaped house with a concrete base and bamboo beams ; a wooden apartment block for african plains and a " cordwood " home based on a sauna in the us .
In a negatively curved , saddle-shaped universe , parallel beams would diverge .
如果宇宙呈马鞍形反向弯曲,平行光线就会分道扬镳。
In bihar , that darkness has been pierced even if only by the thinnest of beams .
在比哈尔邦,曙光已刺破黑暗,尽管光线还十分微弱。
If the universe 's space-time is positively curved , like the surface of a sphere , parallel beams would come together .
如果宇宙的时空像球体表面一样正向弯曲,平行的光线就会交合在一起。
Electron beams are already in use to produce bright pulses of x-rays for high-speed imaging .
人们已经用电子束在高速成像时产生x-射线扫描照明脉冲。
Then the 192 laser beams enter the hohlraum from top and bottom , creating x-rays that heat the capsule to temperatures as high as those within the sun .
然后从顶部和底部射入空腔的192束激光所产生的x-射线将把容器加热至太阳那么高的温度。
Radar beams and ground-based navigation signals travel in straight lines , so they can 't reach into the valleys between mountain ranges .