As the labeled DNA flows through the channel, it passes over a very narrowly focused beam of light.

当标记的DNA从这个通道流过，它经过一个非常窄的会聚光束。

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The invention discloses a light steel stud, which takes the structure of a channel beam or an I beam, and a preformed opening (22) is arranged on the light steel stud (12).

本发明公开了一种轻钢龙骨，成槽钢或工字钢结构，轻钢龙骨(12)上开设有预留口(22)。

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