It is necessary that drilling vessel is capable of standing still under the action of ocean currentwave surge tropical storm and internal wavecurrent in winter.
在冬季的洋流、涌浪以及热带风暴和内波流作用下钻井船有能力保持位置不动是很有必要的。
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The results show that there exists a density window for lower hybrid wavecurrent drive (LHCD), i. e, LHCD would be achieved only within a certain range of plasma density.
Based on the double factors linearization concept proposed by authors, the drag force acting on inclined cylinder in wave-current field has been linearized.