Under DC voltage the restraint and time lag phenomena of partial discharge (PD) in cavities or oil gap by X ray irradiation were investigated.

直流电压下X射线对气隙、油隙放电的激发过程存在明显的“滞后”现象，即：正极性电压下X射线照射首先抑制放电的发生；

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Experiment shows that PD location in oil gap is possible through X- ray irradiation treated by collimation, which might be a new approach to PD location in oil - paper insulation.

试验表明，在对X射线进行准直处理后，实现X射线激励下油间隙局部放电的定位是可能的，这一方法有望成为油纸绝缘系统局部放电定位的新手段。

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The oil could probably flow to fill the gap in Europe, Libya’s main market, in a matter of weeks.

在数周时间之内，来自沙特的石油很有可能会填补利比亚的石油主要出口市场——欧洲的石油缺口。

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And other countries are ready to fill the gap. We already import about But the oil spill is expected to drive that number higher.

VOA: standard.2010.05.27

The International Energy Agency, an intergovernmental energy advisor, has projected an almost in conventional oil production by 2020 and the potential for a serious gap between supply and demand by 2015.

VOA: standard.2009.10.20

There are five companies on the list that are particularly intriguing: American Electric Power (an electric utility), Exxon Mobil (integrated oil), Gap (apparel), Kimberly-Clark (consumer products) and NextEra Energy (renewable energy).

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