| 摘要 |
Disclosed is a device comprising a cylindrical part (I) with a perforated disc and a high pressure sensor (3), one nozzle (4), one cylindrical stub pipe (5) with a perforation (6) in the form of longitudinal interstitial grooves connected with the plane of the coaxial ring chamber (7), in which a low pressure sensor (8) is installed, as well a conical end fitting (9). |
