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单词	Sofar
释义	Sofar /ˈsəʊfɑː / (also SOFAR) noun [mass noun] A system in which the sound waves from an underwater explosion are detected and located by three or more listening stations, useful in determining the position at sea of survivors of a disaster.Listening in the SOFAR channel, scientists or naval personnel can record sounds whose source is thousands of kilometers away.... In the SOFAR channel, low frequency waves may travel thousands of miles before weakening. Ewing and Worzel demonstrated that the SOFAR channel was capable of transmitting the low-frequency, long-wavelength sound waves produced by an explosion near the Bahama Islands to receivers stationed near the coast of Africa. Origin 1940s: from So(und) f(ixing) a(nd) r(anging).
随便看	kinematically kinematics kinematic viscosity kinematograph kinescope kinesics kinesiological kinesiologist kinesiology kinesis kinesthesia kinetic kinetically kinetic art kinetic energy kinetics kinetic theory kinetin kineto- kinetochore kinetoplast kinetoscope kinfolk king King Alfred's cakes

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