Please set down your belongings and step through the metal detector/security gate.

请您拿出随身物品，并通过金属探测器/安检门。

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This article provides the signal-to-noise ratio module of the range-gating photon counting system and discusses the synchronization between the laser echo wave and the detector gate.

本文给出了距离选通光子计数系统的信噪比模型并讨论了激光回波与探测器选通门之间的同步问题。

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In September, Argenbright employees left a metal detector unattended, allowing at least one passenger to walk to a US Airways gate without screening.

CNN: License suspended for Boston Logan security firm