The paper introduces the practice of an oil depot sticking to the "three simultaneous" safety management in its capital construction, technical transformation, and its routine management.

前言： 介绍油库在基建、技改及日常经营管理中坚持安全管理的“三个同时”的一些做法。

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Three simultaneous sonic booms echoed off the walls.

三个同时发生的音爆回荡在墙壁间。

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That means data can be lost in the event of only two or three simultaneous disk failures.

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The alerts come in the wake of three near simultaneous strikes on housing compounds for Westerners in Saudi Arabia which killed 25 people.

CNN: New Malaysia terror threat warning

U.S. officials have said they also believe al Qaeda was behind the nearly simultaneous bombings last Monday at three residential compounds that killed 25 people, including eight Americans, in addition to the nine suspected bombers.

CNN: Saudis: Four detainees have links to al Qaeda, attacks