The reduction step of catalyst with butene-2 and reoxidation step of reduced catalyst with oxygen were investigated by the pulse method.

用脉冲法研究了催化剂用丁烯- 2还原及还原催化剂用氧再氧化步骤。

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The minimum safety coefficient was defined as the reduction coefficient, when the system was fairly close to the limit equilibrium state through decrement of material strength step by step.

此时，系统达到临界平衡状态时所对应的材料强度降低倍数即为整体最小安全系数，临界平衡状态定义为边坡内的塑性屈服区能够形成潜在的滑移通道时的状态。

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Based on the property, a step-by-step degree reduction algorithm was presented.

本文提出具有线性等式约束多目标规划问题的一个降维算法。

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Mr Bush's trade supremo, Robert Zoellick, and the commerce secretary, Don Evans, presented the new plan as the logical culmination of the step-by-step reduction of trade tariffs that has taken place since the end of the second world war.

ECONOMIST: Can America kickstart the Doha round? | The

As he says, a lot of people will freak out this, but its another step along the same line of waste reduction as what we hoped The Times would eliminate (someday) by having copyeditors or writers tag their work once at the point of inception and bake that stuff into the files that flowed downstream from there.

FORBES: Another Thing That Can't Arrive Fast Enough In Newsrooms: Algorithmic Layouts