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A device for projecting sound waves, as in a loudspeaker.
中文意思:
角状扩音器一种用来产生声波的装置,如扬声器


以下为相关句子列表(点击查看,可以看对应的解释):
A device for counting the number of red blood cells in a blood sample. 红细胞计数器血液中用来计算红细胞个数的一种装置
A device for guiding a tool or for holding machine work in place. 夹具,装配架导引工具或使机器固定在适当位置上运转的设备
A device for igniting the charge of a firearm. 枪机一种用来点燃火器中火药的装置
A device for indicating wind direction. 风标用来显示风向的设施
A device for measuring the work capacity of a muscle or group of muscles during contraction. 测力器用来测量在收缩中某一块肌肉或一组肌肉做功能力的装置
A device for projecting sound waves, as in a loudspeaker. 角状扩音器一种用来产生声波的装置,如扬声器
A device for protection from the weather consisting of a collapsible, usually circular canopy mounted on a central rod. 雨伞用来防风雨装置,由某在一根中心柱上的可折收的,经常是圆形的罩蓬构成
A device for recording, measuring, or controlling, especially such a device functioning as part of a control system. 仪表,仪器用于记录、测量或拉制的装置,特别是作为控制系统部分的此类装置
A device for shifting gears on a bicycle by moving the chain between sprocket wheels of different sizes. 脱轨器,转撤器通过在不同大小的扣链齿轮间移动链条而转换自行车齿轮(换档)的装置
A device for slowing or stopping motion, as of a vehicle, especially by contact friction. 闸使运动减速或停止的装置,如汽车的减速装置,尤指通过接触摩擦
A device for transmitting rotary motion, consisting of a handle or arm attached at right angles to a shaft. 曲柄一个传递转动的部件,包括一个手柄或把手与一个轴直角相连
 
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