海上构筑物 meaning in English

marine structure

Petroleum and natural gas industries - general requiremenents for offshore structures
石油和天然气工业.海上构筑物的一般要求
Article 18 the competent authorities shall collect data concerning submarine topography and the distribution of structures at sea in order to offer consultancy services for laying of submarine cables and pipelines , and for conducting relevant investigations and surveying activities
第十八条主管机关应当收集海底地形、海上构筑物分布等方面的资料，为海底电缆、管道的铺设及其调查、勘测活动提供咨询服务。
Whether they are stable or not has an important influence on off shore construction and the safty of the buildings . based on the tests of silt in marine area of chengdao , silt ' s dynamic stress - strain relationship , dynamic strength and their influencial . factors are initial researched . liquefaction of silt , including mechanism , speciality and pattern , is also discussed
随着海洋油气开发的迅速发展，发现海上构筑物的失稳与工程地基特性有着密切关系，而国内外几大油气开采区地基土中均有大量粉土分布，本文的研究区? ?黄河水下三角州埕岛海域也是如此。