GB/T 3768-1996 Acoustics--Determination of sound power levels of noise sources using sound pressure--Survey method using an enveloping measurement surface over a reflecting plane
GB/T 5667-1985 Productive testing methods for agricultural machinery
DB65/T 2728-2007 history
2019DB65/T 2728-2019 Production test method of dried fruit grader
2007DB65/T 2728-2007 Dry fruit classifying machine testing method