指示器 的中文句子和英文句子

旋标装置飞机控制板上的指示器或观测仪，用来测量角度

An indicator or a sighting apparatus on a plane table, used in angular measurement.


标度盘有刻度的表面或面，在上面由活动的指针或指示器表示度量衡，比如温度

A graduated surface or face on which a measurement, such as speed, is indicated by a moving needle or pointer.