优选

It was found that catalyst activity of USY-1 was the highest under weight ratio of H3PW12O40/USY-1=1∶1,the concentration of H3PW12O40 of 25%,the temperature of 480 ℃ and the time of 4 h.

通过对催化剂制备的正交试验，优选了催化剂的制备条件：H3PW12O40与USY-1质量比为1∶1，H3PW12O40浓度为25%，480 ℃焙烧4 h制备的催化剂活性最高。

Following this route, the precipitates disperse homogeneously in the alloy, and the mechanical properties are obviously improved.

用正交试验方法研究了2024铝合金的分级时效工艺，优选出了一种能获得均匀、弥散分布的沉淀强化相以改善铝合金的常规力学性能的分级时效工艺： 100℃，2h+190℃， 2h。

Third In the light of saponin,it is approved that the distilltechnics of saponin of Chinese honey locust was the best by positivejoint and excellent choose experiments of three ingredients and threelevel.

以皂苷组分为指标，通过三因素三水平的正交优选试验，确定了皂荚皂苷部位的最佳提取工艺。

Therefore the chapter gives out a method to enhance the oil recovery ------surfactant flooding, choosing firstly non hydronium surfactant compound system that is due to oil permeable bed of Xing-shugang oil field, and measuring relative permeability in surfactant flooding, surfactant flooding has the purpose to reduce oil-water interface intension and add oil disperse in water.

为此本文提出了注活性水提高低渗透油层开发效果的技术方法，优选出适合杏树岗油田低渗透油层条件下的非离子表活剂复配体系，并对活性水驱油时的相对渗透率进行了测定，活性水驱油可以起到降低油水界面张力、增加原油在水中分散的目的。

And it is considered that the reduction-oxidation method would be the optimum method for realizing in industry direct hydroxylation of benzene to phenol.

通过比较认为，氧化还原法是未来实现苯直接羟化合成苯酚工业化的优选方法。

Aim To optimize and establish the extraction technology of antidepressive substances from Hypericum perforatum L.

目的优选并确立贯叶连翘中抗抑郁成分的最佳提取工艺。

Firstly, two covering hypersphere algorithms were proposed, referred to as minimum volume covering hypersphere algorithm and moving medium centers covering hypersphere algorithm, to heuristically and rapidly select the promising hidden center vectors from all the training samples. Then the particle swarm optimization algorithm combined with recursive orthogonal least square algorithm was used to further prune the initial hidden centers and optimize the control parameters.

为在实际应用中加速优化速度，降低优化计算复杂度，首先提出了最小体积覆盖超球和移动平均中心覆盖超球两种算法，用于启发式的从训练样本中快速的初选出径向基概率神经网络的隐中心矢量，然后将粒子群优化算法和 ROLSA 结合进一步优选隐中心矢量，同时优化核函数控制参数，实现径向基概率神经网络的全结构优化。

Preferably, the special class threads are high-priority, I/O bound threads.

优选地，该特定类线程是高优先级的I/O绑定线程。

Fu rthermore, us ing logallthm least sq uare Princi ple an d group Analyti cHierarchy Process,we determine weightS of imPeriI factors for boiantand give a newjudgment model and method of radian imPerilment ghe evaIuaions.

第六章以电子对抗仿真系统整体效能评价为背景，在排序一致性的基础上建立了确定方案相对优属度的有序比值方法，建立了多属性模糊优选模型，构筑了电子对抗仿真系统效能评价指标体系，给出了电子对抗仿真系统效能评价的具体步骤、方法和计算过程。

It is used successfully in e-valuation and selective preference of micro-series battery for tsinghua university.

该系统已经应用于清华大学微小卫星电池性能的评估和优选。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。