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A device that periodically and automatically opens and closes an electric circuit, producing pulses.
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断续器一种阶段性的能自动打开及关闭电路并产生脉冲的仪器 |
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A device that produces a bright light for signaling, illumination, or identification.
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闪光信号，照明弹一种能产生强光用来发出信号、照明或鉴定物体的装置 |
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A device that reads data from and writes data onto a storage medium, such as a floppy disk.
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驱动器从存储媒介（如软盘）上读出或写入数据的仪器 |
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A device used to automatically follow a sonar signal to which it is assigned.
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一个自动跟随分配的声纳信号的设备。 |
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A device used to convert direct current into alternating current.
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反用换流器用于变直流电为交流电的仪器 |
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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.
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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 |
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A device used to mark time by means of regularly recurring ticks or flashes at adjustable intervals.
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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 |
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A device used to modulate an electromagnetic wave.
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调制器用以调制电磁波的装置 |
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A device used to produce a stage effect, especially a mechanical means of lowering an actor onto the stage.
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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 |
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A device used to produce computer output on microfilm.
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用于产生计算机输出缩微胶片的设备。 |
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A device used underwater to produce pulses of sound, as for an echo sounder.
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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 |
