The optimum technological conditions are as following:temperature 70～90 ℃, pH about 12, stirring speed about 300 r/min, the β-style Bi 2O 3 with needle-shape, 1～10 μm and high pury powder was obtained, which could be able to meet certain requirements for size and purity in the field...
研究表明：最佳工艺条件为反应温度 70～ 90℃，pH值 12左右，搅拌速度约 30 0r min ，制得的Bi2 O3 为β型、针状、粒度为 1～ 10 μm、高纯度的粉末，可应用于对粒度和纯度有一定要求的无机颜料、阻燃剂、抑烟剂、高折光玻璃和核工程玻璃等领域
This paper presents the acoustical design of multi- purpose meeting room, including: shape optimum design, volume design, reverberation time control, noise and vibration control and acoustical design.
本文介绍的多功能会议室建筑声学设计主要包括：会议室容积确定、混响时间控制、体型设计、噪声及振动控制、声学设计特点、声学技术要求等内容。
The optimum blank shape also can be designed according to the formability of the forming part.
最佳空白的形状，又可以设计根据成形形成的一部分。
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 shape and volume fraction of the particles and thermal cycling have also great effect on the microcreep rate of the composites The results demonstrate that it is very difficult for microyield and microcreep properties to achieve the optimum value simultaneously, which is resulted from that the micro-mechanisms affecting them are quite different Thus the application background of the composites must be taken into account to design the resistance to small plastic deformation of the panicle reinforced composites
颗粒形状、颗粒体积分数、冷热循环处理对复合材料的微蠕变速率均可产生重要影响。研究结果表明，颗粒增强铝复合材料的微屈服抗力和微蠕变行为很难同时达到最佳值，其主要原因是影响两者的微观变形机制差别很大。所以在设计颗粒增强铝复合材料抗微小塑性变形能力时，应视复合材料的具体应用背景加以确定。
The calculating method of dynamic area (time-dependent cross-section) of discharge port is summarized and different kinds of discharge ports are compared and analyzed. The optimum shape of discharge port for different profiles is presented.
总结了排气孔动态排气面积的计算方法，分析了排气孔通流面积的变化规律，并对不同形状的排气孔进行了对比和分析，找出了不同型线可开设的最佳排气孔口形状，得到了其对应的齿端修正参数的合理范围。
The blade shape line optimum design of centrifugal impeller based on genetic algorithms is studied in this thesis.
本论文主要研究了遗传算法在离心压缩机叶轮叶片型线的优化设计。
In this paper, a 5000TPD double series cement kiln was taken as a case study and the structure design of its braced steel frame pre-heater tower was optimized. Based on scheme comparison and the technical requirements, the optimum design scheme was determined to be re-arrangement of columns to reduce the beam span and replacing H-shape steel columns by rectangular hollow section columns or concrete-filled ones. About 25% of the total amount of steel was saved by the optimum design.
通过对采用钢框架－支撑体系的某水泥窑窑尾预热器塔架进行优化设计，在多方案比选基础上，结合工艺要求，确定了调整钢柱布置减小钢梁跨度、采用方钢管柱和方钢管混凝土柱代替H型钢柱的优化设计方案，塔架主体钢结构用钢量降低约25%。
The calculating analyses on the mode and the response of structures were done to find the optimum structure parameters and shape, and the best result of reducing noise, under which the production line could not be affected, was obtained.
以往人们也注意到内燃机覆盖件在振动噪声传播中的重要性，并在设计中注意加强机体等部件的刚度，试图通过一些加强措施达到减小振动噪声的目的。
In this thesis, Approximation concept is introduced to analyses the structure shape optimum of the truss.
本文用一种近似的方法对桁架结构进行结构形状优化，以达到节材的目的。
The correlation of crack and body type of JinKeng arch dam makes representative, lots of projects having similar instance. Some questions of shape optimum designing in arch dam discussed and experiences that gained from practical works about shape designing in arch dam are talked about in this article farther.
金坑拱坝的裂缝及和体型的相关性问题具有代表性，很多工程都曾出现类似的情况，由上述问题引申，本文进一步探讨关于拱坝体型设计的若干问题，总结了一些由实际工作中来的关于拱坝体型设计的经验心得。
The purpose of this work is to estimate the optimum shape of fin based on the desired fin volume and desired efficiency.
本论文之目的在於当给定某一相同体积之热交换器鳍片时来求得一个最高效率的几何外型；或者在给定鳍片体积及希望效率下来预测其几何外型。
Methods Parallel tests were conducted on the rate of qualified shape and the rate of qualified weight as the index of evaluation, the orthogonal test was conducted on the 4 factors, including the temperature of drops and the liquor condensate, the drug height in the drug storage tank and the dropping distance, accordingly the optimum forming technics were selected.
以成型率及重量合格率作为评价指标，对滴头及冷凝液的温度、贮药槽药液高度、滴距4因素进行正交试验并确定其最佳成型工艺。
SJG series is inclined sort conduit fan type a kind of 2 new-style type, the enterprise reduces what the axis sheds type fan to be out of shape, center of lamina of air current edge is scattering model, tilt to air current direction, its characteristic: Comparing with engine order photograph under, flow is large with centrifugal type fan; Bulk is less than centrifugal type fan, have efficient moving area broad, noise is low, cover an area of small, installation to go to the lavatory wait for an advantage, this fan is not affected conduit is decorated and move toward, optimum with mix for straight conduit pressurization wind sending a platoon, to the computer room with narrow space, what show it especially is compact with advantage.
青岛新兴顺风机有限公司专业生产供斜流风机青岛斜流风机。青岛隧道风机。青岛风机。SJG型系列斜流通道风机式2一类新式的机器型号，公司沦为轴流式风机的改变现状，气流沿叶片中心为折射型，并向气流目标靠斜，其特征：在同机号比较的下面，访问数量大与离心式风机；容积小于离心式风机，具备有效运行区宽泛、噪音低、占地小、装置便捷等优势，该风机不影响通道整理和走向，最适合与为直通道加压和送排风，关于空间窄小的机房，特别表明岀它的拮据和卓越性。
This blowing fan has a hub connected to the rotating shaft of a motor and a number of blades mounted on the outside surface of the hub at fixed intervals to flow air in the centrifugal direction of the fan. Although this fan is produced in a shape of axial fan or diagonal fan by integrally forming the separate turbo blade on the tip or trailing edge of the rotor blade, the blowing noise can be reduced in addition to the increase in the entire wind quantity of the fan by embodying the optimum set angle of the turbo blade.
由连接在电动机的旋转轴上的轮毂和按一定间隔安装在上述轮毂外周面上的多片叶片构成、使空气向风扇的离心方向流动的送风风扇，虽然制作成将另外的涡轮叶片形成在旋转叶片的叶梢或后沿上而与其成为一体的轴流式风扇和斜流式风扇的形式，但通过实现上述涡轮叶片的最合适的设置角度，便使整个风扇的风量增大，同时减小送风噪音。
The optimum blank shape can also be designed according to the formability of the stamping part.
算法先采用有限元逆算法评估冲压件的成形性，再采用无旋转壳单元模拟产品的回弹。
The potential of a row horizontal well inXY plate is deduced, which is important for horizontal well pattern research.(7) Thepercolation theory of integral well pattern of horizontal and vertical wells is constructed. The accurate productivity of the pattern in pseudo 3-dimension is given and the relationshipof optimum shape factor of the well pattern against dimensionless length of horizontal well
该理论可以推广到分支水平井油水两相流开发指标的计算；(10)本文建立的最优井网形状因子与水平井无因次长度的关系式与井网面积及油层厚度无关，对水平井整体开发方案设计具有一定的指导意义；(11)针对大庆油田外围地质情况，对水平井井别、水平井长度、裂缝性油藏布井方向、裂缝发育程度等敏感因素对井网开发效果的影响进行了研究，结果表明：水平井作采油井较好，水平井布井应垂直于天然裂缝方向。
It includes concretely: carrying on multistage fuzzy comprehensive appraisal to every overall arrangement scheme that is drafted in step with the fuzzy comprehensive evaluation assessment, confirming the route overall arrangement scheme optimized; the optimum seeking result of the scheme, directing against the factor influencing line shape of route according to the overall arrangement of the route, forming these factors according to dominance relation orderly level pass steps structure, and using the analytic approach of the level principle, constructing the comparative judgment matrix among the influence factors; chasing layer calculate and examining to every key element, carrying on level always arranged in an order, confirming the scheme of optimizing.
具体包括：用模糊综合评价法对拟定路线的各布局方案同步进行多级模糊综合评判，确定优化的路线布局方案；根据路线布局方案的优选结果，针对影响路线线形的因素，将这些因素按支配关系形成有序的层次递阶结构，并运用层次分析法原理，构造影响因素间的比较判断矩阵；逐层对各要素计算与检验，进行层次总排序，确定优化方案。
Finally by taking an optimum design method of discrete variables the discrete compound shape method, the optimizing calculation of 8m antenna is carried out.
采用离散变量优化算法--离散复合形法，对强爆炸冲击波作用下的8m天线进行了优化计算。
Design of roll shape for optimum nip conditions in the cross roll piercer
钢管斜轧穿孔机中最佳咬入条件的辊型设计