Flat fan nozzles were found to provide the most uniform spray pattern under many pressure conditions with a coefficient of variation less than 15%.
实验研究发现，扇形喷嘴可以提供最为均匀的喷雾效率，其变化系数小于15%。
The precision of an analytical procedure is usually expressed as the standard deviation or relative standard deviation (coefficient of variation) of a series of measurements.
分析规程的精密度通常以一系列测量数值的标准差或相对标准差(变异系数)来表示。
On a limited sampling, the single-operator coefficient of variation has been found to be 9.1 %.
根据有限取样，发现每个操作员试验结果的变化系数为9.1 %。
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