The result shows that there are three basic types of sound speed profile structure in sea areas of China: D-type, S-type and T-type.
结果表明，中国近海的声速剖面结构可分为深海型、浅海型和过渡型三个基本类型。
It is difficult to determine the effects of straw-break surface on the structure of drifting sand current and the wind speed profile in the sand-moving region due to the complexity of straw-breaks.
由于草方格构成的下垫面复杂多变，其对风沙流结构与风沙活动层风速廓线的影响很难确定。
The wind speed profile turbulence integral scale, and turbulence spectrum are simulated in the wind tunnel test.
风洞试验中对风剖面、湍流积分尺度及湍流谱作了模拟。
To generate and realize 4D guidance in the terminal area, first there should be ground track , then the altitude profile and appropriate speed profile along the track.
末端区域4D导引应首先生成轨迹，然后生成沿该轨迹飞行的高度剖面、合理的速度剖面，最后生成自动引导飞机在规定时间着陆的4D导引指令。
To generate and realize 4D guidance in the terminal area, first there should be ground track , then the altitude profile and appropriate speed profile along the track.
末端区域4D导引应首先生成轨迹，然后生成沿该轨迹飞行的高度剖面、合理的速度剖面，最后生成自动引导飞机在规定时间着陆的4D导引指令。
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