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Gain-Scheduled Control of a Flexible Marine Riser under Hydrodynamical Damping Force Varying with the Upper End Velocity
Flexible Marine Riser hydrodynamical Upper End Velocity
2009/4/29
In the entry/reentry operation of the flexible marine riser, the operators are required to connect its lower end to the blowout preventer at the seabed quickly with both its top connected angle and it...
人类在不断发展、繁荣航运业的同时，也在为自己的生存环境制造出了船艇排放这一日趋严重的污染源。尽管船艇排放发生在广阔的海洋上，且在世界有害物排放中只占不大的一部分，但其绝对数量却很大。据估算，船艇的NOx排放量约为其油耗量的15%，按目前国际市场劣质燃油的销售量1亿吨/年计算，则全世界烧劣质油船舶的NOx排放量多达1500万吨/年