3.2 光纤输入安装
QBH水平放置,取出防尘密封盖。
3.2 Fiber input installation
Put QBH horizontally and take out the dust seal cover
取出防尘盖
光纤头上红点对准QBH红点,慢慢将光纤头插入QBH中。
Align the red point on the optical fiber head with that in QBH, and insert the optical fiber head into QBH slowly.
两中心红点对齐插入安装
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