selection ratio

First of all, learn from the experience ratio ( the golden ratio, root ratio and the proportion of the Fibonacci series) area of defined selection of two-dimensional paper.

首先，借鉴经验比例（黄金比例、根号比例和斐波那契数列比例）界定二维平面纸面积的选择。

Abstract In this paper, we expound the gist of the process control in thick-layer carburizing for heavy-duty gears which includes the selection of the suitable carburizing temperature, cycle and ratio of the carburizing to diffusing period, the way and the demand of carbon-potential control.

阐述了大型重载齿轮深层渗碳工艺控制的要点，包括渗碳温度和时间的合理选择，强渗与扩散时间的最佳分配，碳势控制的途径和要求。

Through Continuous Directive Breeding and Selection on the Improvement of Silkworm Cocoon Shell Ratio

连续定向培育和连续定向选择对家蚕茧层率的改良效果

By experiment and theoretical analysis, the selection of winding angle, thickness ratio and other main parameters is discussed.

通过实验与理论分析，对缠绕倾角、壁厚比等主要参数的选用进行了探讨。

Finally a simulation is conducted to test the impact of compatibility threshold on the success ratio of service composition, and the result proves the necessity for compatibility checking in the selection stage.

最后实验考察了相容度阀值取值对组合服务成功率的影响并证明了在服务选择阶段进行相容性检查的必要性。

After analyzing some normal evaluation functions for feature selection, a new evaluation function named the ratio of mutual information in feature selection was presented.

在分析了常用的一些特征选择的评价函数的基础上，提出了一个新的评价函数，即互信息比值。

The Selection of Optimal Controls Parameter for Given Compression Ratio in Fractal Coding with DCT Complement

有DCT补偿的分形编码中最优压缩比控制参数的选择

The sequential controller, which has four operation modes such as single selection, odd number, even number, and all selection, can be used for single pulse CARS test, realizing time-resolved spectrum, reducing noise and improving signal-to-noise ratio of CARS system.

可以选择采集同步发射的激光信号。其有单选、奇数、偶数、全选四种工作模式，可应用于单脉冲CARS实验，实现时间分辨光谱，同时还可以降低噪音，提高信噪比。

This paper describes the approach to prepare the thermosetting acrylic resins for plastic aluminium compounding plate, especially discusses the selection of monomer, the relative molecular weight, reaction ratio of feedstock and the loading determination of butyl alcohol.

本文阐述了铝塑复合板用热固性羟基丙烯酸树脂的制备过程，着重讨论了单体的选择，环氧树脂相对分子质量和接入比例的确定及丁醇量的确定。

Conclusion: Percoll selection technique could affect normal morphology sperm ratio and acrosin activity.

结论：Percoll法优选精子后形态正常精子百分率和顶体酶活性增加。