- medium grade grinding wheel
- шлифовальный круг средней твердости
Большой англо-русский и русско-английский словарь. 2001.
Большой англо-русский и русско-английский словарь. 2001.
abrasive — abrasively, adv. abrasiveness, n. /euh bray siv, ziv/, n. 1. any material or substance used for grinding, polishing, etc., as emery, pumice, or sandpaper. adj. 2. tending to abrade; causing abrasion; abrading. 3. tending to annoy or cause ill… … Universalium
Diamond tool — A close up of the segment of a diamond saw blade A diamond tool is a cutting tool with diamond grains fixed on the functional parts of the tool via a bonding material or another method.[1] As diamond is a superhard material, diamond tools have… … Wikipedia
Pencil — This article is about the handwriting instrument. For other uses, see Pencil (disambiguation). HB graphite pencils A pencil is a … Wikipedia
Speeds and feeds — A line drawing showing some basic concepts of speeds and feeds in the context of lathe work. The angular velocity of the workpiece (rev/min) is called the spindle speed by machinists. Its tangential linear equivalent at the tool cutter interface… … Wikipedia
Sharpening stone — Waterstone redirects here. For the British bookstore chain, see Waterstone s. An oil stone Sharpening stones, water stones or whetstones are used to grind and hone the edges of steel tools and implements. Examples of items that may be sharpened… … Wikipedia
Emerald — Infobox mineral name = Emerald category = Beryl variety boxwidth = boxbgcolor = imagesize = 225 caption = Emerald with host rock formula = Beryllium aluminium silicate with chromium, Be3Al2(SiO3)6::Cr| molweight = color = Green habit = Hexagonal… … Wikipedia
railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… … Universalium
technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… … Universalium
List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have … Wikipedia
Sheffield — For other uses, see Sheffield (disambiguation). City of Sheffield City Metropolitan borough Top left … Wikipedia
building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… … Universalium