natural bow静挠度, 自然挠度naturaladj.自然的；天然的；私生的Natural gas pressure regulating station天然气调压站natural curing under normal temperature常温下自然硫化natural evergreen broad-leaved forest天然常绿阔叶林natural vibration property of structure自振特性natural circulation waste-heat boiler自然循环废热锅炉natural convection air cooled condenser自然对琳气式冷凝器natural draft counterflow cooling tower逆流式自然通风冷却塔Natural deciduous broad-leaved forest天然落叶阔叶林natural language information processing自然语言信息处理natural ecologic environment in Huizhou