名词
中文翻译：磁性粉末指示器
同义词：
['magnetometer', 'magneto-indicator']
例句：
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1.The magnetic powder indication is used to measure the strength of the magnetic field.
磁性粉末指示器用于测量磁场的强度。
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2. The magnetometer was used to detect the location of the lost dog.
磁测仪被用来探测丢失的狗的位置。
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3. The magneto-indicator showed that the circuit was open.
磁敏指示器显示电路是开路的。