C3 T y p i c a l Jet N oise Spe c t r M e a s u r e d O v e r a R e f l e c t i n gSurface and in a F r e e - F i e l d at the P & W A T e s t F a c i l i t y
标准号：AIR1672
标准名称： Practical Methods to Obtain Free-Field Sound Pressure Levels
from Acoustical Measurements Over Ground Surfaces
|