Before the phone may need to use the first light, and then charge, but also need to repeat the operation 3-4 times before it can be called activation.

以前的手机可能需要先把电用光，再进行充电，而且需要反复操作3 - 4次才可以，这被称之为激活。

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Of course, the only thing we ever "see", really, is the activation of our retinal cells - that's what our brains interpret as light from the outside world.

当然，唯一我们“看到”的是视网膜细胞的激活也就是大脑解读的：外界的光线。

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This paper refer hybrid sensor types to activation of power supply, activation of light source, silicon microtechnology.

本文评述的混合光纤传感器类型范围涉及：电源驱动、光源驱动、硅微技术。

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