查询词典 optimum

According to the model, the deflection and main pre-brace parameters are illustrated with the Jinsong station of the tenth line in Beijing. It demonstrates that the curve shape of theoretical result, computing result and the on-set measure result are uniform in the main and the change law is similar; that the circumferential space of pipe-roof has a optimum value while satisfying the pre-brace function; that the relation between diameter of steel pipe and flexibility of barrel vault meets negative exponential function. And the diameter of steel pipe has a optimum value.

依据该模型，以北京地铁10号线劲松车站管棚支护为例，着重对管棚的挠度和主要支护参数进行的分析表明：理论结果与计算结果和现场量测结果的曲线形状基本相同，变化规律相似；在满足预支护作用的同时，存在相对较优的管棚环向间距；钢管直径与管棚挠度之间符合负指数函数关系，管径存在最佳值。

The results showed that NAA at 0.15～0.9 mg·L -1 was appreciate, and 0.69mg· L -1 was the optimum concentration for bulbil induction from scale expl ants in vitro; and that 3.2mg.L -1 was the optimum concetration of 2,4ˉD for callus induction from l eaflet explant in vitro.

结果表明， NAA诱导离体鳞片外植体产生小鳞茎的用量范围为 0.15～ 0.9 mg·L -1 ，最佳用量为0.69 mg·L -1 ； 2，4ˉD诱导叶片形成愈伤组织的最佳用量为3.2 mg· L -1 。

First, a chlorinator was self-designed in this paper, and dichloride of 2-methyl-1-propene was synthesized by 2-methyl-1-propene reacted with chlorine fast in this reactor. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield and selectivity of dichloride of 2-methyl-1-prop-ene were more than 65% and 80% respectively. Second, the preparation of 2-methylene-1, 3-propanediol, which dichloride of 2-methyl-1-propene reacted with alkali was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the conversion of dichloride of 2-methyl-1-propene was 100%. Moreover the preparation of MPO, which 2-methylene-1, 3-propanediol reacted with hydrogen, in presence of Al_2O_3-Pd catalyst, was gotten, and the product was appraised.

本文在氯化反应过程中，自行设计制作出了氯化管式反应器，在该反应器中异丁烯和氯气迅速混合反应生成二氯异丁烯，根据该氯化反应特征利用正交试验和单因素试验考察了有关因素的影响并优化得到了最佳工艺条件，二氯异丁烯的总收率达65％以上，选择性达80％；接着，对二氯异丁烯进行水解反应制得了2-甲烯-1，3-丙二醇，讨论了相关因素对水解反应的影响，并通过正交试验和单因素试验得到了较佳工艺条件，二氯异丁烯的转化率达100％；同时还对制备的2-甲烯-1，3-丙二醇在常压下采用三氧化二铝负载钯催化剂催化加氢得目的产物MPO，并对产品进行了鉴定，从而打通了整个工艺路线。

Optimum range of comminution granularity was obtained finally on the basis of building optimum program.

提出了黄芩的优化煎煮工艺参数，在此基础上，得到黄芩最佳粉碎粒度范围。

The optimum design of variable distance mechanism of side slope compactor was performed by means of mathematical programming method and optimum design principle.

用数学规划法和"最优设计"原理对边坡压实机工作装置的变距机构进行了优化设计。

To study the performance of photocatalystic reactor, we designed and made the experiment rig that is fit for sewage treatment. Considering practical applications, we have discussed the optimum inclination for flat photocatalystic reactor. Under the condition of lack solar radiation fact survey date founded on wave band, the suggestions to determine the optimum inclinations for flat solar collector are given. In the experiments of degradation of dye, Congo red and Methylene blue dyes were taken as targets' contamination.

在光催化反应器的研究中，我们在现有的基础上，自行设计制造了适合于草酸铁/过氧化氢体系污水处理的平板型光催化污水处理实验装置；考虑到今后的实际应用，还对其最佳倾角问题进行了讨论，在缺乏长期太阳分波段辐射实测数据的前提下，建议平板型光反应器采用平板太阳能集热器的最佳倾角。

The optimum carbon source of the pathogen for the hypha growth and conidiophore bearing was amylomaltose, the optimum nitrogen source was yeast extract and the alternation of light and darkness could promote the hypha growth.

菌丝生长及产孢的最适碳源为麦芽糖，最适氮源为酵母膏，光暗交替有利于菌丝的生长。

In the first part, convex duality method linearizes convex wealth equation, and the introduction of Lagrange multiplier converts original problem to an unconstrained static optimum problem. At last, we obtain another equivalent optimum problem with convex control domain.

文章前一部分运用凸对偶的方法先将财富方程线性化，Lagrange乘子的引入使最优问题等价与一个无约束的静态最优问题，最后转化为一个凸控制域的最优问题。

In addition,the authors propose that for a multi peaked one dimensional search problem its optimum solution can be obtained by ordinary optimization methods only when the convexity or concavity of the objective function matches the step length determining the one dimensional search region and the method of finding the optimum step length factor.

另外 ，还提出了对于多峰一维搜索问题，只有当所求函数的凹凸性与确定一维搜索区问题的步长以及求解最优步长因子的方法匹配时，才能用一般方法得到搜索区间内的最优解

The results from the study on the decoloring conditions of strain 3# showed that the pH range for decoloring reaction was 5～11 with 6 ～7 being the optimum, the temperature range was 10～30℃ with 30℃ being efficiency optimal. The decoloring efficiency was higher under the presence of oxygen than that lack of oxygen. Strain 3# could more strongly decolor malachite green under optimum conditions. The decoloring rate was above 50%, 70% and 90% in 4, 12 and 24 h treatment, respectively.

对3#菌株的脱色反应条件进行初步研究表明，3#细菌的脱色反应的pH为5～11，最佳范围pH 6～7；温度10～30℃，最佳温度30℃；有氧气情况下的脱色效果较缺氧情况下好；在最佳条件下该菌对孔雀绿染料的脱色作用较强，处理4、12、24 h后，色度去除率分别达到50%以上、70%以上和90%以上。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。