دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: deflection from a straight path undergone by a light ray or energy wave in passing from one medium to another in which the wave velocity is different, such as the bending of light rays when passing from air into water.

n: a method of geophysical prospecting using the generation, reflection, refraction detection, and analysis of sound waves in the earth.