由此说明，无因次IPR曲线模型是一种经济实用的预测水平气井产能的方法。
The dimensionless IPR curve model appears to pro- vide a cost-effective way of predicting horizontal gas well deliverability.
论述了风冷发动机冷却风扇的试验法和用无因次特性系数法制取风扇特性曲线的方法。
This paper describes the methods of fan testing and making fan property curve by dimensionless characteristic coefficient for the cooling fan of air-cooled engines.
基于通用简谐梯形组合运动规律的构成方法，建立了凸轮机构从动件无因次通用曲线方程。
On the basis of a composing method of universal harmonic trapezoid motion laws, nondimensional general curve formulation of driven cam is built.
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