Well known is the structuralweakness in Groupon's business model, being the "low cost of entry" for competitors.
众所周知的是Groupon商业模式的结构性弱点，即竞争对手进入的门槛很低。
2
Boeing yet again postponed the maiden test flight of its 787 Dreamliner, this time because of structuralweakness in the area where the wing attaches to the body of the aeroplane.
波音公司又一次推迟了波音787梦想飞机的首次试飞。这次是因为机翼与机身的连接区域的结构性缺陷。
3
Since carbon nanotubes conduct electricity, sending a current through the paint would help engineers to detect structuralweakness through changes in the paint’s electrical properties.