声波

The QUS method of BMD testing uses sound waves to measure bone density.

方法的定量超声骨密度测试使用声波测量骨密度。

Bone strength, determined using quantitative ultrasound measurement of bone speed of sound at the middle left tibial shaft, decreased significantly in the control group from 2,892 30 m/sec at baseline to 2,799 26 m/sec at four weeks. However, bone SOS of the exercise group remained stable (2,825 32 m/sec at baseline and 2,827 26 m/sec at four weeks). Despite improvement in bone SOS with exercise, there were no accompanying changes in markers of bone formation and resorption.

研究使用超音波测量骨骼声波速度来数量化评估骨骼强度，测量的位置是婴儿的中间左侧胫骨干，研究显示，对照组的婴儿显著减少了骨骼强度，从基线2，892 ± 30 m/sec降到四周时的2，799 ± 26 m/sec，但是锻炼组的骨骼SOS维持稳定(基线：2，825 ± 32 m/sec，四周：2，827 ± 26 m/sec)，虽然锻炼可以改善骨骼SOS，但是骨骼形成和再吸收指标并没有跟著改变。

Sound intensity is defined as the sound power per area in the process of the sound wave promulgation. Its direction is the same as the direction of sound wave promulgation.

声强的定义为声波传播过程中空间单位面积上传输的声功率，它的指向是声传播的方向。

It has developed the Audio Spotlight, a system that fires a beam of sound onto a small area from a distance of more than 60ft.

他们改进了声音聚光灯-一种可以在超过60英尺的距离外发出一束声波并打在一片小型区域上的系统。

He quickly opened his sketch book and drew an outline of the cypress with his charcoal pen.

她的声波在清冽的空间扩散，像清甜的冰糖渐渐融化。

Natacha Aguilar of La Laguna University on the Spanish Canary Islands and her colleagues fitted special suction-cupped electronic tags to 23 short-finned pilot whales near Tenerife. The tags were designed by Mark Johnson of the Woods Hole Oceanographic Institution to record whale sounds while monitoring both their depth and position.

西班牙加那利群岛拉古纳大学的娜塔查安吉拉和她的同事们给特纳里夫附近的23条短鳍领航鲸安上特别的吸盘式电子标签，这种标签由伍兹霍尔海洋研究所的马克约翰逊设计，为了在监听它们的深度和位置时记录其声波。

When we hear voice and sound, voice and sound waves enter the ear and strike the eardrum, which converts the air vibration into physical vibration, and conveys that vibration to the snail shell-shaped auditory organs.

当我们听到声音时，声波进入耳朵并敲击耳膜并由空气振动转化为物理性质的振动，然后传达到听觉器官。

Fluidization and Sounding Pressure Characters Experimental Research on Pulsating Fluidized Bed After verifying experimentally the Rijke type self-exciting pulsating fluidized bed combustion, under different operating conditions (different empty cross-section wind speed and inaction bed height), experimental research the oscillation characters of sounding pressure in the pulsating fluidized bed. The results indicate that the sound characters in the Rijke type self-exciting pulsating fluidized bed combustor are the same with it in the Rijke type combustor, the pressure in the combustor oscillate up and down in the sinusoidal manner and the pressure is the superposition of the multiple harmonic waves.

脉动流化床流化与声学压力特性实验研究在实验验证了Rijke型自激脉动流化燃烧概念后，在不同运行条件(空截面风速、静止床层高度)下，实验研究了Rijke型自激式脉动流化床的声压振动特性，研究结果表明：脉动流化床内建立起的声波特性和Rijke型脉动燃烧器内的一样，各点压力呈正弦规律上下振动，且压力是基波幅值最大的多次谐波的叠加。

To raise the sound intensity of the modulated aerodynamic acoustic source in low frequency region, the resonances in two resonance pipes, a straight pipe and a bi-curved horn were tested by forcing the airflow of sound wave to pass through them.

为提高调制气动声源在低频处的发声强度，将含声波的气流通过直管和双曲喇叭两种谐振管产生共振。

Then the LIA is used in a system which finds out the location of a sound source.

将制作的锁相放大器应用在了利用声波的相位差定位的系统中。

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。