查询词典 sound wave

Device for converting sound waves into electric power that has wave characteristics essentially similar to those of the sound.

将声波转换成电功率并保持其波形特性基本相似的装置。

According to the theory of wave acoustics and ray acoustics,train is regarded as a moving limited line sound source and the mathematics model of sound field distribution is set up around the elevated railway.

根据波动声学和几何声学原理，将列车看作一运动着的有限长线声源，建立了有声屏障时城市高架轨道交通沿线声场分布计算模型。

1 SIMPLE WAVE NATURE OF SOUND 2.1.1 Introduction to Longitudinal Propagation Wave motion or vibration is made possible by inertia and elasticity in a material.

2.1声音的简单波本质2.1.1纵向传播介绍波动或者说震动，是可以通过物体的惯性和弹力产生的。

Efficacy: imitation of fish biology signals, using the majority of species increasingly sound, phototaxis, a specific sound, light, wave as an enticement factor, achieve far deeper waters of the call to lure fish to stimulate and focus on attracting fish swim to capture the workplace and improve fishing flats fishing operations the amount of time, with high economic and entertainment value.

功 效：仿鱼类生物学信号，利用多数鱼种的趋声、趋光性，以特定声、光、波作为引诱因素，实现对较远较深的水域鱼类的呼唤引诱，刺激并吸引鱼类集中游向捕捉工作地点，提高捕鱼者单位作业时间的捕渔量，具有极高的经济和娱乐价值。

Acousto-optic devices lure the fish, combined with the activities of fish characteristics and eating habits, through the imitation holographic fish biology signals, using the fish increasingly sound, phototaxis, a specific sound, light, wave as an enticement factor, achieve far deeper waters of the call to lure fish to stimulate and attract fish, swim to the phishing focus on the workplace and improve fishing anglers unit operating time, the amount of fish caught fishing with a high The economic value; this series of products, since the majority of sales have been very popular with fishermen, she was fishing people to like it.

诱鱼器是什么——美国声光诱鱼器，结合鱼的活动特点以及进食习性，通过模仿鱼类全息生物学信号，利用鱼的趋声、趋光性，以特定声、光、波作为引诱因素，实现对较远较深的水域鱼类的呼唤引诱，刺激并吸引鱼类集中游向捕钓工作地点，提高捕鱼钓鱼者单位作业时间的捕钓渔量，具有极高的经济价值；本系列产品，自销售以来一直很受广大钓友、捕鱼人的喜欢。

In traditional methods of design of sound barriers, the wave theory of sound is used widely.

在传统的声屏障设计中，多采用的是基于波动理论的近似方法。

sound velocity ; temperature ; stationary wave method ; ultrasonic wave

虽然用超声波测声速具有以上优势，但实验数据的精确度在一定程度上受到超声波信号发生器的稳定性、压电陶瓷换能器的效率、周围环境温度等因素的影响。

The wave front of the ultrasonic wave can be changed by using the sound lens.

目前 ，增大超声波在岩层中传播距离的方法是增大超声换能器的功率。

Just as sound is a wave motion, light in the same sense, may be regarded as a wave motion.

正如声音是一种波动一样，光也同样可以看作是一种波动。

At the circumstance of low speed of flow, the standing wave resonances of protruding and trap cylindrical cavities are also studied. The distribution of sound particle velocity and pressure of the standing wave in cavity are analysed.

还进行了陷落式和突出式两种圆柱形腔驻波共振的研究，分析了驻波共振的声场分布，其频率公式与实验值符合很好。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。