James Bogardus (1800-1874) built the pioneering Cast Iron Building, New York (1848), with a rigid iron frame providing the main support for upper-floor and roof loads.
摩天大楼的先驱是博加德斯(1800~1874)在纽约市建造的铸铁大厦(1848),以牢固的铁骨架主要承载上层和屋顶的负荷。
Aimed at complex geology condition and requirements of big and concentive loading structure on upper part for foundation, drilled cast piles foundation is selected through comprehensive analysis.
针对复杂的地质条件和上部大而集中的荷载结构对基础的要求,通过综合技术分析,选用了挖孔灌注桩基础。
Laser-welded keeper just could be used when there was enough space between the upper jaw and the lower jaw in patients with limited space to design the cast-keepers.
激光焊接式衔铁适用于颌间距离较为充裕的患者,当颌间距离较小时则可选择铸造式衔铁。
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