92/30755 DC被替代
Bs 1042 Measurement Of Fluid Flow In Closed Conduits. Part 1: Pressure Differential Devices. Section 1.6: Method Of Measurement Of Pulsating Fluid Flow In A Pipe, By Means Of Orifice Plates, Nozzles Or Venturi Tubes (iso/tr 3313)
出版：British Standards Institution
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