查询词典 wind wave

The research on the ship maneuverability in the wind, wave and current, can not only be used to optimize the maneuverability design in the ship design stage, help to understand the mechanics of ship collision and capsizal, but also guide the handling operator to improve the handling skill, guard against the sea accident.

本文将OpenGL虚拟现实仿真技术运用到船舶操纵与控制领域中，利用MMG数学模型，建立了风浪流作用下船舶操纵运动的三维动态仿真系统，武汉理工大学硕士学位论文取得了良好的效果。

Second, the wind flume length is limited and wind wave could not be fully developed in laboratory.

对比了天然风浪与试验风浪的风场特点，研究中重点探索试验水槽中风区延伸方法问题。

The new PDF represents well the distribution of wind wave steepness at low to moderate wind speeds.

1999给出的分布，新的分布与数据符合得更好，特别是在小波陡附近。

Lab experiments were conducted in a wind-wave flume to measure the wave steepness distribution.

1999导出的理论分布在零波陡处概率密度不为零的理论缺陷。

The growth relationship between spectrum parameter and fetch were studied, from which three parameters and overshot phenomenon that appears during wind wave spectra developing were tested, and an equation describing the growth of three-parameter spectra with wind wave was obtained With the equation, the spectra of wind waves were obtained at zero-dimensional fetches of 300, 500, 2000, 5500, 10000, and 15000, and the overshot was described more clearly. However, the overshot does not exist in the whole process of wind wave spectrum development as stated previously by Hasselmann, but in the early stage of the development only, extenuates with wave growth and then disappears when the wave fully grows.

基于已得到的谱参量随风区的变化关系，对三参量风浪频谱以及风浪频谱成长过程中存在的&超射&现象作深入的研究，得到三参量风浪频谱随风区的成长关系：在此基础上，得到无因次风区：300、500、2000、5500、10000、15000下，风浪频谱的谱线，从而直观地描述了风浪频谱成长过程中的&超射&现象，并认为在风浪频谱的成长过程中确实存在着&超射&现象，但是该现象并不如Hasselmann等提出的理论中阐述的那样存在于风浪频谱成长的全过程，而是仅存在于风浪频谱成长的初期。

The meteorological data for shipping in the The western part of the N. Pacific Ocean during 1950～1995 analyzed taking 5°×5°latiude and longitude as statistical girds. The characteristics and changing laws of the wind, wave and swell are given. This area is representative's monsoon area.

本文根据1950～1995年共46a的西北太平洋气象船舶报资料，按5°×5°网格统计的风、浪要素进行分析研究，阐明了西北太平洋风、浪、涌的特点及其变化规律。

Therefore, the study is significant both theoretically and practically. As a result, the studying aim of this paper is to establish a practical and complete system for the prediction of ship maneuvering motion, taking into account of the influence of the environmental factors, such as the wind, wave and current, establish a practical and complete system for the prediction of ship maneuvering motion. In this paper, the OpenGL virtual reality simulation technique is introduced into the field of ship maneuver and control, and using the MMG mathematical model, the three dimensional dynamic simulation system of the ship motion is established and good results are achieved. In the process of the system development, firstly, the maneuvering motion equations for ship in the still water are established, based on the MMG module mathematical model and serial experimental result. After compiling the program, the calculation results are compared with the experimental data, the coherence between them validate the mathematical model.

在系统开发过程中，首先采用MMG分离式数学模型及相关的系列化试验结果，建立单桨单舵海洋运输船舶在静水中的船舶操纵运动方程，并编制计算程序，经与试验结果比较，证实了计算结果的正确性；为了解MMG数学模型中模型参数变化对操纵性指数的影响程度，作者在上述已有程序基础上，对有关模型参数进行偏移修正，探讨了相应参数变化后的操纵性指数，对船舶操纵性指数对模型参数的灵敏度进行了详细的分析与探讨，所得结论与工程实际相吻合，具有实际应用价值，并为进一步提高船舶操纵性预报的精度打下了基础；然后，在已有的船舶静水操纵运动模型基础上，考虑双桨双舵的影响，建立了内河双桨双舵船舶的操纵运动模型；最后，综合考虑风浪流作用力的影响，进行了船舶的操纵运动仿真计算。

The platforms are under the action of complex ocean environment including wind, wave, current and ice, which lead to structural static and dynamic responses intricate. A significant matter is to develop effective methods for structural response analysis, sensitivity analysis of responses with respect to shape and size design variables, and modeling and solving the problems of design optimization.

海洋平台受到风、浪、流、海冰等复杂海洋环境的作用，其结构静、动态响应非常复杂，研究海洋平台的结构响应分析方法、结构响应对结构形式以及尺寸等设计参数的敏度分析技术、优化设计问题的模型与求解方法，具有重要的理论意义。

To effectively detect the ship hydrodynamic pressure signal from wind wave background, according to the characteristic difference between the ship hydrodynamic pressure signal and the wave noise, a target detection method is used on the AR model and the artificial neural network.

为了有效地从风浪背景中检测舰船水压场信号，根据舰船水压场信号和波浪噪声信号的差异，以时间序列的AR模型理论为依据，采用基于AR模型和神经网络的舰船水压信号检测方法。

In addition, the effect of surface drift on wind wave breaking, as well as some statistical characteristics of three-dimensional waves are also discussed.

本文还讨论了表面漂流对风浪破碎率和白浪覆盖率模式的影响以及三维海浪破碎的某些统计特征。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。