beginning sensor的意思|示意

The front curtain drops away, revealing the sensor behind, and allows the light to enter the camera, beginning the exposure.

前幕帘落下，后方的感光元件露出，光线进入相机，曝光开始。

This thesis gives an introduction of the knowledge of wireless sensor networks' components, architecture, routing protocols, application prospects and so on at the beginning.

本文首先介绍了无线传感器网络的组成、拓扑结构、路由协议、应用前景等方面的知识。