gas plenum
101ple|num — «PLEE nuhm», noun, plural nums or na, adjective. –n. 1. a) an enclosed quantity of air or other gas under greater pressure than the outside atmosphere. b) such a condition of pressure. 2. a space that is filled, or conceived as being filled, with …
102Compost — (  /ˈ …
103Wave–particle duality — Quantum mechanics Uncertainty principle …
104Cephalopod — Cephalopods Temporal range: Devonian – Recent[1] (Stem groups from Cambrian)[2] …
105HVAC — 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… …
106Premier of the Soviet Union — Former political post Coat of arms Predecessor …
107Reflection high energy electron diffraction — (RHEED) is a technique used to characterize the surface of crystalline materials. RHEED systems gather information only from the surface layer of the sample, which distinguishes RHEED from other materials characterization methods that rely also… …
108Human subject research — (HSR), or human subject use (HSU) involves the use of human beings as research subjects. It is an important part of medical research, and many people volunteer for clinical trials of medical treatments. People also volunteer to be subjects for… …
109Reef aquarium — See also: Marine aquarium Reef aquarium in Monaco A reef aquarium or reef tank is an marine aquarium that prominently displays live corals and other marine invertebrates as well as fish that play a role in maintaining the coral reef environment.… …
110Axial compressor — Axial compressors are rotating, aerofoil based compressors in which the working fluid principally flows parallel to the axis of rotation. This is in contrast with centrifugal, axi centrifugal and mixed flow compressors where the air may enter… …
