磁记忆信号非常微弱，磁敏传感器的选择十分重要。
Because magnetic memory signal is faint, selection of magnetic sensor is very important.
然而，这种散射光极其微弱，因此只产生一个非常弱的信号。
However, the scattered light is extremely weak and therefore yields a very low signal.
然而，这种散射光极其微弱，因此只产生一个非常弱的信号。
However, the scattered light is extremely weak and therefore yields a very low signal.
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