The noise of an optical receiver consisting of a surface emitting laser amplifier and a detector is enhanced by any lack of gain uniformity.

由表面发射激光放大器和检测器组成的光接收器的噪声因任何增益的非均匀性而增加。

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This paper presents a study of the reflection of sound pulse from porous material in the ease that the impulse sound source and receiver are located on a line perpendicular to the surface of material.

本文提出当脉冲声源和接收点在同一条垂直于材料表面的直线上时，声脉冲从多孔材料反射的研究。

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In basic terms, the system has power lines connected to coils under the surface of a road, which then transmit the electricity through the air to a receiver coil in a car.

简单地讲，这个系统将输电线和路面下的线圈相连接，通过空气将电能传输给汽车里面的接收线圈。

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In a nutshell, inductive charging involves a surface that acts as the transmitter, with coils built-in underneath to transfer energy to a willing receiver.

ENGADGET: Primed: how wireless and inductive charging works