دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Refers to the joint whose thread pitch is big. The main advantages are clicking fast and big force.

n: A kind of composition of cutting teeth of tooth bit whose teeth are long and pitch is wide.

n: the triangular notch on some heel tooth of cone bit so as that a half-pitch flank profile forms in the bottom for convenient for clean the cuttings

n: in transmission chain, a combination of roller link and pin link used when a chain has an odd number of pitches.

n: the time required for the bow or the stem of a floating offshore drilling rig to start at its lowest position, rise with a wave, and return to its lowest position.

n: in roller chain, about 5/16 of the pitch. See pitch.

n: 1. in wireline spooling, the degree of slope that the wireline travels in going from one wrap to the next. 2. in roller chain, the distance (in inches or millimetres) between the centres of two members next to one another, i.e., the distance between the centres of the bushings or rollers. 3. on offshore floating rigs, the up-and-down movement of the hull from the bow to the stem.

deviation from a horizontal plane. Down is negative and up is positive.