Archaeologists also may locate buried remains by using such technologies as ground radar, magnetic-field recording, and metal detectors.
考古学家们还可能利用地面雷达、磁场记录和金属探测器等技术来定位被掩埋的遗骸。
2
The basic patent for the theory of magneticrecording dates back to 1886.
用磁录音这一理论的最初专利始于1886年。
3
This little-known city in the Pearl River delta makes 30% of the magneticrecording heads used in hard drives across the world and 16% of the world’s electronic keyboards.