Data bits flow from cell towers through fiber and copper lines to a switching station.
数据从信号接收塔经由光纤和铜线流至交换站。
Carefully transfer the supernatant of the flow-through to a new microcentrifuge tube (not supplied) without disturbing the cell-debris pellet in the collection tube.
小心将液体的上清移至一新的微量离心管中，不要搅动收集管中的细胞残渣沉淀。
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