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1 обязательный
•There is no proof that cholesterol is an obligatory (or mandatory) intermediate in the synthesis of...
•Vacuum treatment is not essential for treating...
•Increased axle loadings are now allowed, but stronger axles are imperative.
•A thorough understanding is not mandatory at this stage of presentation.
Русско-английский научно-технический словарь переводчика > обязательный
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Vacuum sewer — Vacuum sewers were first installed in Europe in 1882 but until the last 30 years it had been relegated to a niche market. The first who has applied the negative pressure drainage (so called vacuum sewerage) was the Dutch engineer Liernur in the… … Wikipedia
Vacuum aspiration — Background Abortion type Surgical First use China 1958 and UK 1967[1] Gestation 3 12 weeks Usage … Wikipedia
Vacuum assisted closure wound therapy — Vacuum assisted closure (VAC) is a technique of wound closure used to promote healing in large or chronic wounds, fight infection and enhance healing of burns. VAC seals the wound with a foam dressing and applies negative pressure to the wound… … Wikipedia
Vacuum plasmaspraying — (VPS) is a technology for etching and surface modification to create porous layers with high reproductibility and for cleaning and surface engineering of plastics, rubbers and natural fibres as well as for replacing CFCs for cleaning metal… … Wikipedia
Vacuum swing adsorption — Vacuum Swing Absorption (VSA) is a non cryogenic gas separation technology. Using special solids, or absorbents, VSA segregates certain gases from a gaseous mixture under minimal pressure according to the species molecular characteristics and… … Wikipedia
Vacuum bell (medicine) — The vacuum bell is a medical device used in the treatment of pectus excavatum, one of the most common chest wall defects. [cite web |url=http://www.findarticles.com/p/articles/mi m3225/is n1 v46/ai 12450746 |title=Pectus excavatum pathophysiology … Wikipedia
List of British words not widely used in the United States — Differences between American and British English American English … Wikipedia
steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying … Universalium
Field electron emission — It is requested that a diagram or diagrams be included in this article to improve its quality. For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images. Field emission (FE) (also known as field… … Wikipedia
Decompression sickness — Caisson disease [decompression sickness] Classification and external resources Two United States Navy sailors prepare for training inside a decompression chamber … Wikipedia
Breast cancer — Classification and external resources Mammograms showing a normal breast (left) and a cancerous breast (right). ICD 10 C … Wikipedia