当电源故障已经发生时，用在电源故障情况下的电力去磁记录磁头。
When a power failure has occurred, the recording head is demagnetized with power in case of a power failure.
在记录磁头已经被去磁之后，卸载记录磁头。
The recording head is unloaded after the recording head has been demagnetized.
在记录磁头已经被去磁之后，卸载记录磁头。
The recording head is unloaded after the recording head has been demagnetized .
在记录磁头已经被去磁之后，卸载记录磁头。
The recording head is unloaded after the recording head has been demagnetized .
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