Very high efficiency and stable single frequency (SF) operation was obtained by using model 801D ring dye laser at normal pumping level.

本文报告了利用801D型环形染料激光器，在一般泵浦功率下获得了甚高效率的相当稳定的单频运转结果。

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It took a full week of pumping before the water level was brought down to 20 centimeters, and Speth, wearing boots, shorts and an old T-shirt, could splash down to explore.

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Tepco had been pumping water to raise the level in the No. 2 reactor.

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