求翻译：基于波浪港池实验，考虑规则波的作用，采用中值粒径为0.22mm的原型沙铺设与波浪传播方向成45°夹角的斜坡，研究斜向波作用下斜坡上海底管线的三维冲刷特性。是什么意思？

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Based on the waves of Hong Kong, taking into account rules pool lab wave role, with the value of the Prototype 0.22particle size of Gaza and the waves in the direction of dissemination of laying a 45° angle of slopes, oblique wave role of research on the slopes of the submarine pipeline of 3-D Flush

Based on the wave harbor basin experiment, considered the regular wave the function, uses the median diameter is the 0.22mm prototype sand lays down with the wave propagation direction becomes 45° the included angle pitch, under the research diagonal wave action in the pitch the offshore pipeline th

Wave basin based on experiments, taking into account the wave function, prototype of the median grain size of 0.22mm sand laying slopes into a 45 ° angle to the wave propagation direction, studying under oblique wave slope dimensional erosion characteristics of submarine pipeline.

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