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。

youdao

It will be a long time before sales return to 17m a year, the level until recently regarded as "normal" by an industry accustomed to pumping up demand with cheap credit and suicidal pricing.

还需要很长一段时间才能回到一年1700万两的销量，直到最近才被认为是一个习惯靠低廉的信贷和跳楼价带动需求的行业的“正常”水平。

youdao

The Dutch have been fighting the rising and falling tides for centuries, building dikes and pumping water out of areas that are below sea level.

荷兰人几个世纪以来一直在不断地与大自然的潮涨潮落相抗争，不停地筑堤挖渠，将积水从低于海平面的地区抽走。

youdao

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.

CNN: Vietnam War bunker reopened under luxury hotel

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

WSJ: Japan's Nuclear Crisis Escalates