在水下

Simulation experiments and analysis show that the proposed method is robust in a wide range of characteristic exponent values of stable distribution.

仿真表明这种算法是一种在高斯和分数低阶α-稳定分布噪声条件下具有良好韧性的水下目标定向算法，相对共变而言，分数阶相关具有更宽的噪声特征指数范围，更适用于实际应用。

In the future, a few archaeologists may be able to use expensive equipment, such as the special diving suit and robot below, to investigate underwater remains in places too cold or deep for rubber suit and aqualungs.

以后，一些考古学家可能会用上像以下图示中的特殊潜水服和机器人等昂贵设备，去探索那些太冷或过深的地方的水下历史遗迹，在这些地方橡胶潜水服和氧气瓶派不上用场。

The experiment individually focused on the velocity distribution of concentration ellipse shape represented in oxidation ditches existed in sewage treatment plants, and confirmed the rationality of aeration and the submersed flow driver power designed.

该试验在实际污水处理厂进行，对采用同心椭圆型沟道的Orbal氧化沟的流速分布进行了的测定，重点研究了Orbal氧化沟的水力流态特征，验证了曝气及水下推动设备功率配置的合理性。

The survey for similar Orbal oxidation ditch was performed on-the-spot for safety of engineering design. The experiment individually focused on the velocity distribution of concentration ellipse shape represented in oxidation ditches existed in sewage treatment plants, and confirmed the rationality of aeration and the submersed flow driver power designed.

该试验在实际污水处理厂进行，对采用同心椭圆型沟道的Orbal氧化沟的流速分布进行了的测定，重点研究了Orbal氧化沟的水力流态特征，验证了曝气及水下推动设备功率配置的合理性。

Considering the two trail objective functions of objective trail and trail speed, and considering the output continuousness of real time, the thought of premeasure control was promoted and the parameters of pre-measure control were discussed. Good results were obtained in the simulation and experiment.

考虑目标轨迹和运动速度二个跟踪目标函数及实际控制输出的连续性，提出了预测控制的思想，并对预测控制的参数进行了分析和探讨，以水下机器人Twin-burger为控制对象，在计算机仿真和水池实验中都得到了与理论分析相一致的结果，验证了本文所提出的思想和方法的正确性。

In 1943 Jacques Cousteau and his friend made it possible by inventing the scuba machine.

在1943年雅克。库斯托和他的朋友发明了水下呼吸器，才使这成为可能。

In the design of the structure, a new 2-D scanning machine is put forward which has overcome the limit of common underwater TV system influenced by the environment of water. It can scan 360 degrees in horizontal plane and 90 degrees in vertical plane, and there isn't dead angle.

根据以上内容的研究和分析，在结构设计方面，提出了二维扫描机构，它克服了一般水下电视系统由于使用特殊环境的限制不能进行扫描的缺点，可以进行水平360度，垂直90度全方位扫描，并且不存在盲区。

According to the manual, this binocular is immersible in 1.5m deep water for one hour and operational from -43 to+55 degs.

按照说明书的说法，该镜可以浸没于1.5m深的水下一小时，并且可以在-43 ~+55℃的温度条件下使用。

At the same time, new information about the underwater target can be got and the detectability can be increased.

在机载激光探测水下目标过程中，若采用偏振激光代替激光脉冲进行探测，不但可以压缩回波信号的动态范围，减少水面回波的影响，而且还能增加新的信息和可探测性。

The feature extraction methods of LOFAR spectrum, envelop spectrum and waveform structure are studied. Based on the study of third order cummulant, the feature extraction method of diagonal slide spectrum is presented.

研究了水下目标辐射噪声信号的LOFAR谱特征、包络谱特征、波形结构特征提取方法，在对三阶累积量的性质进行分析的基础上，提出了三阶累积量对角切片谱特征的提取方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐