Experiment and analysis of movable weir for flow measurement indicate that the modular limit of movable weir is relatively high. And the accuracy of theoretical discharge calculated is satisfied.

通过对活动堰测流进行实验研究和理论分析，认为活动堰过流的淹没度限值高，理论计算流量精度满足测流要求。

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Much insight has been gained by using theoretical and experimental methods to study the mechanism of pulsed discharge in water .

使用理论和实验的方法研究水中脉冲放电的机制，目前已经获得了很大的进展。

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For gas lasers a helical resonator with coaxial ring discharge structure is proposed, and the theoretical analysis is given.

提出了一种适用于同轴环形放电结构气体激光器的环形螺旋谐振腔，并给出了理论分析。

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