The study on structure of critically safe multistage mixer-settler for the extraction process of high enriched uranium and plutonium has been completed.

为了可靠地进行高加浓铀和钚的萃取过程，研究了一种结构简单的临界安全的混合澄清槽。

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A pulsed extraction column with an annular cross section can successfully provide large-cross-section and can be made critically safe for nuclear operation.

具有环状截面的脉冲萃取柱可以有效地提供更大的柱截面积，并且保证核燃料的临界安全。

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Just when you thought it might be safe to go back to the multiplex, studio executives have announced plans for a follow-up to this year's critically panned romantic comedy, Valentine's Day.

就在你认为可以安全回电影院的时候，制片厂负责人对外公布，计划要为本年度精心策划的浪漫喜剧《情人节》拍续集。

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These represent quite the mixed bag, and unfortunately, most remakes fail, both critically and financially, despite the overriding belief in Hollywood that they are somehow safe bets or sure things.

FORBES: 10 Best Movie Remakes Ever