An instrument used to detect, measure, and determine the direction of small electric currents by means of mechanical effects produced by a coil in a magnetic field.
检流计，电流计一种仪器，用以探测、测量和测定微小电流方向，采用线圈在磁场中产生的机械效果的方法
Radar is used to detect objects in the air or at sea.
雷达被用来探测空中或海上的目标。
detecting incipient tumors; an incipient personnel problem.
发现早期肿瘤；刚出现的个人问题
