tailieunhanh - Mcgraw Hill, Dictionary Of Engineering (2003) Episode 7

Tham khảo tài liệu 'mcgraw hill, dictionary of engineering (2003) episode 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | equivalent noise pressure molecular density. i kwiv-s-lsnt nĩ-trs-jsn presh-sr equivalent noise pressure ENG ACOUS In an electroacoustic transducer or sound reception system the root-mean-square sound pressure of a sinusoidal plane progressive wave which when propagated parallel to the primary axis of the transducer produces an open-circuit signal voltage equivalent to the root-mean-square of the inherent open-circuit noise voltage of the transducer in a transmission band with a bandwidth of l hertz and centered on the frequency of the plane sound wave. Also known as inherent noise pressure. i kwiws-lsnt noiz presh-sr equivalent orifice MECH ENG An expression of fan performance as the theoretical sharp-edge orifice area which would offer the same resistance to flow as the system resistance itself. i kwiv-s-lsnt or-s-fss equivalent round ENG The diameter of a circle whose circumference is equal to the circumference of a pipe whose cross section is not a perfect circle. ijkwivs-lsnt raund equivalenttemperature thermo A term used in British engineering for that temperature of a uniform enclosure in which in still air a sizable blackbody at 75OF would lose heat at the same rate as in the environment. i kwiv-s-lsnt tem-prs-chsr equivalenttwisting moment mech Atwisting moment which if acting alone would produce in a circular shaft a shear stress of the same magnitude as the shear stress produced by a given twisting moment and a given bending moment acting simultaneously. i kwiv-s-lsnt twist-iq mo-msnt equivalent viscous damping MECH An assumed value of viscous damping used in analyzing a vibratory motion such that the dissipation of energy per cycle at resonance is the same for the assumed or the actual damping force. i kwiv-s-lsnt jvis-kss damp-iq equiviscous temperature CHEM ENG A measure of viscosity used in the tar industry equal to the temperature in degrees Celsius at which the viscosity of tar is 50 seconds as measured in a standard tar efflux viscometer. .

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