The physical stop which corresponds to the entrance window is then the required field stop.

入射窗所对应的实物光阑就是所要求的场光阑。

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After the magnetic field, the watch is likely to stop, slow, or fast.

受磁后，手表有可能停，慢，或快。

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After the magnetic field, the watch is likely to stop, slow, or fast.

受磁后，手表有可能停，慢，或快。

youdao