Furthermore, as well as propelling a magnetic device through the body, an MRI machine can also locate it.

而且在推动磁力器件穿过人体的同时，MRI机器还能找到它的位置。

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Permanent magnetic device. as a new type patent device, is used to ensure the hydroelectric generator to start its static excitation more reliably and more quickly.

永磁装置是一种用于使水轮发电机静止励磁系统可靠快速起励的新型专利装置。

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Providing an on-board power supply is difficult, however, so he is investigating the use of external magnetic fields to power the device.

然而，倘若板载动力装置很难实现的话，他正在研究利用外部磁场给器件提供动力的途径。

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A compass is a device containing a metal object that points toward the magnetic north pole.

VOA: special.2010.07.14

An electro-magnetic device known as an EM-Bird has also been flown, suspended beneath a helicopter, in long sweeps over the ice.

BBC: Arctic ice melting at 'amazing' speed, scientists find

California-based HPV Technologies recently demonstrated a "magnetic acoustic device" or MAD that can broadcast a targeted beam of sound for a more than mile.

NPR: Focused Sound 'Laser' for Crowd Control

Then, this device would make sound, because it has magnetic field like light streaming.

CNN: Interview with Nelson Shin