The coupling coefficient of transformer relates the transforming efficiency.
变压器的耦合系数与变压器的效率有关。
The influences of walk-off Angle on effective second-order nonlinear coefficient and SHG efficiency were also analyzed.
计算并分析了离散角对有效二阶非线性系数和倍频效率的影响。
On the basis of a large number of field test data, the regression of the displacement coefficient and system efficiency for pumping unit wells were established.
本文在抽油机井大量现场测试数据的基础上，建立了抽油机井系统效率、排量系数这两个重要指标与诸影响因素之间的回归方程。
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