When did the first man or woman think about buttressing such a habitat using tree limbs?
曾起何时第一个男人或女人想到树枝去支撑他们的窝?
Methods: The anterior button-like buttressing plate fixation system was designed with 317L steel .
方法：用317L不锈钢研制出颈椎前路钮扣钢板螺钉系统。
Unlike a vault, the truss exerts no thrust But only downward pressure; supporting walls require no Buttressing or extra thickening.
同拱顶不同的是桁架不承担推力而只承担向下的压力，不需要扶壁或其它特别的加固物来支撑墙体。
The idea of an organic supporting and buttressing skeleton of masonry see buttress , here appearing in embryo , became the vitalizing aim of the medieval builders .
这个想法的一个有机的支持和支撑骨架的砖石，在这里出现的胚胎，成为振兴目标的中世纪建筑。
If coastal ice shelves buttressing the west Antarctic ice sheet continue to disintegrate, the sheet could disgorge into the ocean, raising sea levels by several metres in a century.
假如支撑西南极洲冰盖的沿岸冰架持续解体，那么冰盖就会泄入海洋，百年之内海平面便将上升数米。
If coastal ice shelves buttressing the west Antarctic ice sheet continue to disintegrate, the sheet could disgorge into the ocean, raising sea levels by several metres in a century.
假如支撑西南极洲冰盖的沿岸冰架持续解体，那么冰盖就会泄入海洋，百年之内海平面便将上升数米。
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