High power double -clad fiber amplifiers have widespread applications in fiber sensing, fiber optical communication system, spectral measurement, inertial confinement fusion, and so on.

高功率双包层光纤放大器在光纤传感、光纤通讯、光谱测量和惯性约束聚变等领域有广泛应用。

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By means of a double mirror interferometry a two-dimensional temperature distribution measurement in convective heat boundary layers is presented.

本文介绍利用双镜干涉仪测量对流传热边界层中二维温度分布的方法。

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The double and single pressure measuring instruments in the standard systems were developed specially for the measurement of pressure in vehicles with a compressed air brake.

用于标准系统双值和单值压力测量仪器，是为了满足带有压缩空气式制动器车辆压力测量，而专门研发的。

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