centrifugal reducing valve
41Straight-8 — The term straight 8 is a colloquialism for an inline eight cylinder engine. The type has been produced in side valve, overhead valve and overhead cam configurations.A straight 8 can be timed for inherent primary and secondary balance, with no… …
42Negative feedback — Most endocrine hormones are controlled by a physiologic negative feedback inhibition loop, such as the glucocorticoids secreted by the adrenal cortex. The hypothalamus secretes corticotropin releasing hormone (CRH), which directs the anterior… …
43Radiator — Radiators and convectors are types of heat exchangers designed to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in automobiles, buildings, and… …
44protein — proteinaceous /proh tee nay sheuhs, tee i nay /, proteinic, proteinous, adj. /proh teen, tee in/, n. 1. Biochem. any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the… …
45Preselector gearbox — For other uses, see Preselector (disambiguation). Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic …
46Contra-rotating propellers — For contra rotating marine propellors, helicopter rotors and turbine fan blades, see Contra rotating. Not to be confused with counter rotating propellers. Contra rotating propellers on a Rolls Royce–Griffon–powered P 51 unlimited racer Aircraft… …
47Garratt — For people named Garratt, see Garratt (surname) A Garratt is a type of steam locomotive that is articulated in three parts. Its boiler is mounted on the centre frame, and two steam engines are mounted on separate frames, one on each end of the… …
48Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …
49NPSH — This article is about Net Positive Suction Head. For the band commonly abbreviated to NPSH, see Natalie Portmans Shaved Head. For the fire hose coupling thread, see Glossary of firefighting equipment#N. Hydraulic circuit NPSH is an initialism for …
50papermaking — [pā′pər māk΄iŋ] n. the making of paper papermaker n. * * * pa·per·mak·ing (pāʹpər mā kĭng) n. The process or craft of making paper. paʹper·mak er n. * * * Introduction formation of a matted or felted sheet, usually of cellulose fibres,… …
