vacuum filling machine
71tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
72Vietnam War — Part of the Cold War and the Indochina Wars …
73Poppet valve — A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most… …
74Syringe — A typical medical syringe with needle A syringe is a simple pump consisting of a plunger that fits tightly in a tube. The plunger can be pulled and pushed along inside a cylindrical tube (the barrel), allowing the syringe to take in and expel a… …
75Vinnytsia Oblast — Infobox Ukrainian oblast Name = Vinnytsia Oblast UkrainianName = Вінницька область TransliteratedName = Vinnyts’ka oblast’ Ukraine Administrative center = Vinnytsia GovernorName = Oleksandr Dombrovskyi GovernorParty = ? ChairmanName = ?… …
76Movie projector — This article is concerned with technical aspects of moving film projection. For non film movie projection, see digital cinema. For historical aspects, see the article history of cinema. 35 mm movie projector in operation …
77List of James Bond gadgets — A popular element of the James Bond franchise is the exotic equipment and vehicles he is assigned on his missions, which often prove to be critically useful.The original books and early adaptations had only relatively minimal pieces like the… …
78Quantum dot display — A quantum dot display is a type of display technology used in flat panel displays as an electronic visual display. Quantum dots (QD) or semiconductor nanocrystals are a form of light emitting technology and consist of nano scale crystals that can …
79RUSSIA — RUSSIA, former empire in Eastern Europe; from 1918 the Russian Soviet Federative Socialist Republic (R.S.F.S.R.), from 1923 the Union of Soviet Socialist Republics (U.S.S.R.); from 1990 the Russian Federation. Until 1772 ORIGINS The penetration… …
80UNITED STATES OF AMERICA — UNITED STATES OF AMERICA, country in N. America. This article is arranged according to the following outline: introduction Colonial Era, 1654–1776 Early National Period, 1776–1820 German Jewish Period, 1820–1880 East European Jewish Period,… …
