دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: in tank sampling, a sample that consists of proportionate parts from several sections of the tank.

n: the average of all the instantaneous values of current or voltage in one-half a cycle of AC electricity;equal to 0.636 times the maximum value.

A thread for tools and equipment that has three parallel threads per inch (similar to a BW thread). Used in applications of 1.75” OD thread or less.