Potential variation of rust preventing oil film after its degradation was studied by using wire beam electrode.

采用丝束电极研究防锈油膜失效之前的电位变化。

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Meanwhile, aviation regulators in America and Europe issued further directives aimed at preventing oil leaks in engines made by Rolls-Royce.

与此同时，美国和欧洲的航空规则制定者发布了更进一步的指导意见，主要针对罗尔斯—罗伊斯公司制造的发动机，防止其燃油泄漏。

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This oil is also excellent for the cold weather, preventing dryness by providing moisture and essential nutrients.

这种油在寒冷的季节用也很好，它能提供水分和必需的营养素预防干燥。

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Earlier this month, as part of a energy and water funding bill, the Senate approved a provision preventing companies selling or shipping gasoline to Iran from supplying oil to the U.S.

VOA: standard.2009.10.28

Officials were also forced to move barges that had been preventing oil from reaching sensitive wetlands.

BBC: Hurricane Alex delays BP oil clean-up efforts in Gulf

Importantly, this mud also acts as a kind of plug in the hole, preventing any oil and gas from blasting up out of the hole.

FORBES: Blowout Suspected in Transocean Rig Explosion

The SOA branch said ConocoPhillips China had made little progress in checking for potential oil spill sources and preventing more spills.

FORBES: Another Oil Leak Reported At China's Largest Offshore Well