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。
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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