Result of research indicated that:(a)Siol effective coefficient changed from 0.3047 to 0.8550,respectively with medium-low yield farmland of 71.28 percent.
2、雅安市土壤的有效系数在0.3047～0.8550之间，平均为0.6439，全市土地自然生产力水平为中等偏上，中低产田土占71.28％。
参考来源 - 基于GIS的雅安市土地生产潜力研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The effect of the operation on the effective coefficient of returns was obtained by experiments.
通过实验确定操作参数、结构参数对有效返料系数的影响。
This paper expound this disperse analysis method of train braking force, along with its application to study of braking force effective coefficient.
文中阐述了列车制动力的这种离散分析方法，以及它在制动力有效系数研究上的应用。
Combined effective coefficient shows engine's capability to resist the combined distortion and the interaction between pressure and temperature distortions.
组合影响系数表示发动机抗组合畸变的能力以及压力畸变和温度畸变之间的相互影响。
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