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A device used underwater to produce pulses of sound, as for an echo sounder.
中文意思:
声脉冲发送器置于水下产生声脉冲的装置,如回音器中的装置


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A device used to determine geographic direction, usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth.指南针用于确定地理方向的设备,通常包括一个或多个水平安装或悬挂的磁针,可在枢轴上自由活动直到与地球磁场在一条线上
A device used to mark time by means of regularly recurring ticks or flashes at adjustable intervals.节拍器一种利用间隙可调的有规律地重复出现的拍打或闪光来标记时间的仪器
A device used to modulate an electromagnetic wave.调制器用以调制电磁波的装置
A device used to produce a stage effect, especially a mechanical means of lowering an actor onto the stage.舞台装置一种制造舞台效果的装置,特指用机械升降方式把演员置于舞台之上
A device used to produce computer output on microfilm.用于产生计算机输出缩微胶片的设备。
A device used underwater to produce pulses of sound, as for an echo sounder.声脉冲发送器置于水下产生声脉冲的装置,如回音器中的装置
A device was constructed, which is made up of a detector, a three demension micromovement device with high precision which can be controlled at long distance, an enough large target chamber, a serial BALZERS pressure stabilizing system which can measure a它包括探测器、可远距离遥控的高精度三维微动装置、足够大的靶室系统、可对工作气体的气压进行测量和调节的气压稳定系统以及进行电离分布研究的电子学系统。
A device whose output data are a representation of the sum of the numbers represented by its input data.一种(电子)器件,其输出数据是表示输入数据的数字之和。
A device, such as a diode, that converts alternating current to direct current.整流器;整流管一种将交流电流转化为直流电流的装置,如二极管
A device, such as a line, stake, or flag, set on a playing field and showing the playing or scoring position.记分器线、桩或旗帜等设施,置于运动场上以显示比赛或得分位置
A device, such as a respirator or an inhaler, by which a gas, vapor, or air is drawn in.吸入器用来吸入气体,蒸汽或空气的仪器,如呼吸器或吸气器
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