flow-regulating valve
71Environmental scanning electron microscope — Wool fibers imaged in an ESEM by the use of two symmetrical plastic scintillating backscattered electron detectors …
72Water clock — For the individual water clock at The Children s Museum of Indianapolis, see Water clock (Indianapolis). A display of two outflow water clocks from the Ancient Agora Museum in Athens. The top is an original from the late 5th century BC. The… …
73Drip irrigation — A dripper Drip irrigation, also known as trickle irrigation or microirrigation or localized irrigation , is an irrigation method which saves water and fertilizer by allowing water to drip slowly to the roots of plants, either onto the soil… …
74HVAC — may also stand for High voltage alternating current. See also: Glossary of HVAC HVAC systems use ventilation air ducts installed throughout a building that supply conditioned air to a room through rectangular or round outlet vents, called… …
75Fluorescent lamp — A fluorescent lamp or fluorescent tube is a gas discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light.Unlike… …
76Glossary of nautical terms — This is a glossary of nautical terms; some remain current, many date from the 17th 19th century. See also Wiktionary s nautical terms, Category:Nautical terms, and Nautical metaphors in English. Contents: A B C D E F G H I J K L M N O P Q R …
77Primary Life Support System — A Primary (or Portable) Life Support System/Subsystem, or PLSS, is the backpack of a spacesuit. It provides most of the functions of a spacecraft life support system, in a smaller package. The functions performed by the PLSS include: *regulating… …
78Professional diving — Hardhat diving redirects here. Often, hardhat diving is used to specifically mean diving in the old type Standard diving dress. A US Navy diver at work. The umbilical supplying air from the surface is clearly visible Professional diving is a type …
79regulator — /reg yeuh lay teuhr/, n. 1. a person or thing that regulates. 2. Horol. a. an adjustable device in a clock or a watch for making it go faster or slower. b. a master clock, usually of great accuracy, against which other clocks are checked. 3. Mach …
80throttle — I. verb (throttled; throttling) Etymology: Middle English throtelen, from throte throat Date: 15th century transitive verb 1. a. (1) to compress the throat of ; choke (2) …
