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optimal combinations
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  最佳组合
     Based on the laser ablation mechanism, the effect of vapor pressure and thermal conduction on the quality of pattern etching in direct etching with an excimer laser is analyzed. The optimal combinations of laser energy density, pulse frequency and repetition number are obtained for Al thim film of various thicknesses. For Talbot imaging, the effect of contrast on the quality of the pattern etched is also discussed.
     在激光剥离机制的基础上,分析了激光直接刻蚀过程中,蒸气压及热传导对图形刻蚀质量的影响,并得出了刻蚀不同厚度Al膜的激光能量密度、脉冲频率和刻蚀脉冲数的最佳组合.对Talbot成像法中对比度对图形刻蚀质量的影响也进行了分析
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     In addition, the author explained how to determine the optimal combinations of the ingredients in the concrete which met the need of high-performance by adjusting the relationship between short-term strength and long-term strength of concrete according to the different mixing ratio of slag, fly ash, superplasticizer and water-binder ratio.
     阐述了如何利用矿渣掺合料、粉煤灰、减水剂掺量及水胶比的不同,在满足混凝土性能要求的前提下,调节早期强度与后期强度增长的关系,确定混凝土各组分的最佳组合
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     In order to determine the optimal combinations of environmental factors for promoting photosynthesis of cucumber in greenhouse,this experiment was made to analyze the net photosynthesis rate of cucumber leaves under different combinations of temperature,light intensity and CO2 concentration.
     通过温度、光照强度、CO2浓度不同处理组合,研究3因子对黄瓜叶片净光合速率的综合影响,从而筛选出促进日光温室黄瓜光合作用的7种最佳组合,分别为:温度12℃时,光照强度100~400μmol.
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  “optimal combinations”译为未确定词的双语例句
     In the latter one, the most optimal combinations are 0.5 mg/L IBA+ (1.0~2.0) mg/L BA、 2.0mg/L IBA、 2.0 mg/L BA;
     直接发生方式中,两种石斛在0.5mg/L IBA、2.0mg/L BA和1.0mg/L NAA+2.0mg/L BA的条件下,茎的诱导频率较高,分别为70.8%、80.0%,84.3%。
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     Conclusion The combination of FL+SCF+IL 3+IL 6+TPO+G CSF might be one of the optimal combinations for significant expansions of CFU GM and CFU Mk simultaneously.
     结论 FL +SCF +IL 3+IL 6 +TPO +G CSF组合是体外同时扩增CFU GM和CFU Mk的最佳细胞因子组合之一。
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     The optimal combinations of media constituents for high ACE inhibitory activity were pH 7.35,temperature 57.2℃,and the ratio of head to meat(1∶1).
     优化后的工艺参数为:pH7.35,温度57.2℃,虾头与虾肉比例为1∶1。
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     Seven optimal combinations were selected: ① temperature 12℃,light 100~400μmol·m-2·s-1and CO2 1000~1200μL·L-1;
     m-2.s-1,CO2浓度1000~1200μL. L-1;
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     (2) In all seawater treatments the Helianthus tuberosus' main stem got longer and thicker with the increase in N and P. (3) Analysis of the interactions of seawater,N and P showed that Treatments W_(2)N_(3) and W_(2)P_(3) were the optimal combinations.
     (2)各浓度海水浇灌下,随着施氮、磷量的增加菊芋主茎普遍增长和增粗。 (3)经过对海水与N肥及P肥的交互作用分析,可以看出W2N3和W2P3是优化组合;
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     THE OPTIMAL PARAMETER COMBINATIONS OF CROSSING AVERAGE
     移动平均线的最佳参数组合
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     Optimal Linear Combinations of Classifiers for Language Identification
     语言辨识系统中最佳线性融合技术的研究
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     It is the optimal pattern.
     这个结果如同自然界生态平衡一样,是相对最优的格局。
短句来源
     Optimal temperature for D.
     各种光强下的暗呼吸速率均随温度升高而增大。
短句来源
     combinations of lithology;
     红层边坡岩体岩性的组合特征;
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  optimal combinations
The Taguchi experimental design has been applied to investigate the optimal combinations of process parameters to maximize the material removal rate and minimize the tool wear.
      
On the basis of the evaluation, the optimal combinations of processing parameters are found.
      
On the basis of the evaluation, the optimal combinations of processing parameters are found.
      
Fine, equiaxed, two-phase microstructures and high deposit density resulted from optimal combinations of droplet enthalpy, deposition rate, droplet size, and deposit cooling rate which gave short local solidification times.
      
We analyze the values of toughness for low-, medium-, and high-strength steels and propose optimal combinations of the strength and toughness characteristics of metals.
      
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It is often the case that technology demands an accurate multi-step change of the speed ratio between various parts of machines, textile machines in particular. A great many change gears are, as a rule, necessary for this purpose. It is desirable to minimize the number of such gears. In this paper, a method for determining the optimal combinations of the tooth number series in a set of change gears is proposed, with which the number of gears is decreased to a minimum with the precision and number of steps...

It is often the case that technology demands an accurate multi-step change of the speed ratio between various parts of machines, textile machines in particular. A great many change gears are, as a rule, necessary for this purpose. It is desirable to minimize the number of such gears. In this paper, a method for determining the optimal combinations of the tooth number series in a set of change gears is proposed, with which the number of gears is decreased to a minimum with the precision and number of steps of the speed ratio remaining unchanged. The proposed combinations are supported by mathematical proof.This is the first of a series of reports. It deals with the regularity of distribution of the speed ratio series when a definite number of change gears are used. A table illustrating optimal combinations of the D. B. L. of the tooth numbers with corresponding goars numbers up to 20 in a set is presented. (See table 5)Let z_i be the tooth number of the i-th gear in a set of n gears, z_1>z_2……>z_n. The speed ratio between certain machine parts is determined by the formula:I_(i,j)=z_i/z_jThe D. B. L. of the tooth numbers in a set of change gears is defined as:a_(i,j)=log_φI_(i,j)= log_φz_i-logφz_jWhere φ——the common ratio of each succesive pair of steps of the changeable speed ratios. There are 3 kinds of sets A with elements a_(i,j):1) Full sequenceA={1, 2, 3,……(?),M}Where M=n(n-1)/2.It is possible only when n≤4.2) Sequence with repetitionA={1,2,3……(?)d; h_1, h_2……h_d}Where h_i, h_2, h_a h_d<(?).If h_1, h_2,……h_d>(?), then set A is defined as3) Sequence with "broken tail" (interruption towards the end of the sequence).(Shown in Fig. 1)When n>4, repetition or "broken tail" in the sequence is inevitable. It is optimal to find proper combination of z_i of n-set to give maximum (?), or minimum repetition or interruption in the sequence.Some results for this purpose are given with examples. Data of comparison between this method and the method currently used in selecting the tooth number series are shown in table 6.

生产工艺往往要求机器能够均匀而准确地变换多档速度。通常配备了许多只变换齿轮以供选用。本文提出了在保证调速精确度的前提下,使备用变换齿轮只数减至最少的齿数系列选配方法,并从数学上论证了设计方案。本文为第一部分,论述了传动比系列的分布规律,并提出了20只以下变换齿轮的齿数系列最优组合方法。

The problem in practice of determining the proper combination of z_i in a set of n change gears may be abstracted to the problem of finding the proper combination and permutation of the elements a_(i,i+1) of the set A_1 of the F. O. D. B. L. to give maximum M - d (Notations are the same as in Part Ⅰ). In part Ⅰ, we have given some results to find optimal combination of the elements of the Set A_1. In this part some rules for permuting these elements are introduced. 3 kinds of intercalated sets...

The problem in practice of determining the proper combination of z_i in a set of n change gears may be abstracted to the problem of finding the proper combination and permutation of the elements a_(i,i+1) of the set A_1 of the F. O. D. B. L. to give maximum M - d (Notations are the same as in Part Ⅰ). In part Ⅰ, we have given some results to find optimal combination of the elements of the Set A_1. In this part some rules for permuting these elements are introduced. 3 kinds of intercalated sets of the F. O. D. B. L. have been found: 1. Set A_1 with even left wing (table 10); 2. Set A_1 with coincidence of both wings (table 12); 3. Set A_1 with circulated elements (table 13). In the given example, a set of 12_(+1) change gears (instead of 33 for current machines) are enough for ring spinning frames to give draft from 9.71 to 41.2 in 101 steps with step difference<2.2%, and another set of the same amount of change gears (instead of 19 for current machines) for the same machine to give twist from 190 t/m to 1314 t/m in 101 steps with step difference<3%. This method is practical and may be used for designing sets of change gears for any kind of machines (not merely confined to textile machinery). The analyses made in the paper may perhaps be useful in studying combinatorial mathematics.

本文列举了为获得一组变换齿轮齿数的最优组合时对一阶对数差的排列规则,并介绍了一阶对数差的几种嵌中系列。附有一个符合一定生产条件的变换齿轮最优齿数组合求法的详细实例。

This paper introduces an optimal design of coaxial cable carrier system.The various parameters,such as:preemphasis characteristic,feedback characteristic,transmitting level,etc., have been considered.The optimal combinations of values of these parameters are obtained by means of digital computers. First,the author describes the principal formulas and its numerical methods of noise calculation. Secondly,the simplex method is adopted to obtain the minimum point of noise power.Finally,a sea- rch along the...

This paper introduces an optimal design of coaxial cable carrier system.The various parameters,such as:preemphasis characteristic,feedback characteristic,transmitting level,etc., have been considered.The optimal combinations of values of these parameters are obtained by means of digital computers. First,the author describes the principal formulas and its numerical methods of noise calculation. Secondly,the simplex method is adopted to obtain the minimum point of noise power.Finally,a sea- rch along the valley line to get the optimal values of various parameters has been made. Program ODCCS contains three major parts:subroutine of noise calculation-NOISE;subroutine of simplex method-SIMPLEX;subroutine of search along the valley line-SAV.All of these are written in BASIC-Ⅱ language.

本文介绍同轴电缆通信系统的最优设计。各种参数诸如:预畸特性、反馈特性、发送电平等都已加以考虑,并用电子数字计算机求出各项参数的最优组合。文中首先介绍杂音计算的主要公式及其数值计算法,其次采用单纯形法初步求出杂音的最小点,最后再沿谷线进行搜索,以得出各参数的最优值。ODCCS 总程序主要包括三个子程序,即 NOISE 杂音计算子程序;SIMPLEX 单纯形法子程序;SAV 沿谷线搜索子程序。全部程序都是用 BASIC-Ⅱ语言编写的。

 
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