声波发射器

On the basis of investigating the sound field of a plane piston transducer and the relations between sound field and radiation force, by settling four plane piston transducers driven at the same frequency at each corner of a regular triangular pyramid with their sound-beam axes crossing at the center of the pyramid, this technique uses ultrasonic wave synthetic theory to acquire a three-dimensional ultrasonic standing wave field. The micro-component can be captured, transported, released in the range of space by adjusting the phase of the transducers.

在研究单个圆形平面活塞换能器声场分布以及声场和辐射力关系的基础上，将以相同频率驱动的4个平面活塞换能器呈正四面体放置，利用声波合成原理获得三维超声驻波场，通过调整各个换能器发射信号相位之间的关系实现对微构件在空间范围内的俘获、移动、释放等操纵。

This model builds up the relationship between the levitation capabilities and the geometric parameters of a single-axis acoustic levitator, and proves to be successful in predicting resonant modes, Hm ( m =1, 2, 3, 4), and in explaining the axially symmetric deviation of the levitated samples near the reflector and emitter.

该模型揭示了声悬浮性能和以声波长为参考的悬浮器几何参数之间的本征关系，成功地预测声场的谐振模式 Hm ( m =1， 2， 3， 4为模式数， Hm 为反射端-发射端谐振间距)，并解释了反射端和发射端附近的悬浮样品偏离对称轴的实验现象。

The arc array transmitter is composed of many ceramic flexural vibrators which are arranged in an annulus. Directional radiation is realized by controlling the vibrating phase of each vibrator.

声波测井圆弧阵发射换能器由多个压电振子沿着圆周排列，通过控制各个振子的激励时间可以实现向某个方位方向的声波辐射。

We obtain scattering values of the metal cylinder by utilizing the monostatic system.

我们利用单向系统获得金属圆柱体的声场散射值，即：换能器在远场发射声波照射金属圆柱并且在远场同一地点接收金属圆柱的散射值。

Actually painted bright orange, these recorders are equipped with "pingers" or radio and acoustic beacons that aid in their retrieval

&黑匣子&实际上呈亮橙色，并安装有&声波发生器&，即无线电和声波的信号发射器，以利于事故后的搜寻工作。

Actually painted bright orange, these recorders are equipped with "pingers" or radio and acoustic beacon s that aid in their retrieval

&黑匣子&实际上呈亮橙色，并安装有&声波发生器&，即无线电和声波的信号发射器，以利于事故后的搜寻工作。

The batteries on the "pingers," little electronic noisemakers stuck to the sides of the flight data recorder and the cockpit voice recorder, will start to wear down in about three weeks, and slowly fade to silence.

在装有飞行数据和驾驶仓对话录音的黑盒子两侧存在一个声波发射器，但是声波发射器上的电池将会在3周后减弱，直至声波发射器慢慢降到无声。

Mr. Bouillard said search teams will continue efforts to locate the recorders' audible beacons using ultrasensitive undersea microphones until July 10, when batteries on the 'pingers' will almost definitely have died.

布依拉德说，7月10日前，搜救队将继续用超灵敏的海底扩音器来锁定黑匣子的音响信标，在这之后黑匣子上声波发射器的电池将耗尽电量。

On landing, a parachute stabilises the vehicle for water entry and it floats until a remotely operated vehicle deployed by the submarine homes on to it with a sonar pinger.

降落时，一个降落伞帮助该机稳定入水，然后漂浮着直到一个由潜艇部署的遥控潜器利用一个声纳声波发射器找到它。

The Towed Pinger Locators , which can detect emergency beacons to a depth of 20,000 feet (6,100 meters), are being flown to Brazil on Monday with a U.S. Navy team.

可以探测到来自2万英尺深度（6100米）紧急信号的拖曳声波发射定位器在周一由一支美国海军部队运往巴西。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。