Laser heat is used to amplify a large, weak magnetic field to record a bit.
激光的热量用来放大一个大面积脆弱的磁区域，来记录一位。
Our products include: magnetic drill, threading machine, hollow bit and rail drill.
经营产品为：磁力钻，攻丝机，空心钻头及钢轨钻头。
Our products include: magnetic drill, threading machine, hollow bit and rail drill.
经营产品为：磁力钻，攻丝机，空心钻头及钢轨钻头。
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