نمایش نتیجه 13231 تا 13240 از 14709 نتیجه یافت شده برای P:
n: a drilling fluid containing man-made chemicals that emulate natural oil. Natural oil-base muds require that the cuttings made by the bit be specially handled to prevent damage to the environment;synthetic muds were therefore developed to replace oil-base muds in environmentally sensitive areas. For this reason, synthetic- based muds are sometimes termed pseudo-oil-base mud. See oil-base mud.
n: a set of base and derived units corresponding to a particular group of quantities. synchronous speed (rpm)
sym: tesla. abbr: top of;used in drilling reports.
time
wall thickness
n: a ruler with a crosspiece or head at one end used in making parallel lines.
n: connection for transforming three-phase power using two transformers;a variation of the open-delta connection.
threaded and coupled.
n: A kind of special tubular tool that be used to fish coupling pipe.
a specialized seal shape.
abbr: temporarily abandoned.
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