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trass

n. 火山土

火山土

The Collaborative International Dictionary of English v.0.48 (gcide)

Trass \Trass\, n. [D. tras or Gr. trass, probably fr. It.
terrazzo terrace. See {Terrace}.] (Geol.)
A white to gray volcanic tufa, formed of decomposed trachytic
cinders; -- sometimes used as a cement. Hence, a coarse sort
of plaster or mortar, durable in water, and used to line
cisterns and other reservoirs of water. [Formerly written
also {tarras}, {tarrace}, {terras}.]
[1913 Webster]

Note: The Dutch trass is made by burning and grinding a soft
grayish rock found on the lower Rhine.
[1913 Webster]

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英文字典中文字典相关资料:

Trass - Wikipedia
Trass is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar It is a grey or cream-coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff
What Is TRASS? - ROMEX
Trass is a naturally occurring mineral celebrated for its pozzolanic properties — meaning it reacts chemically with cement to produce a stronger, denser, more durable mortar matrix
TRASS definition and meaning | Collins English Dictionary
Definition of 'trass' trass in British English (træs ) noun a variety of the volcanic rock tuff, used to make a hydraulic cement
TRASS Definition Meaning - Merriam-Webster
The meaning of TRASS is a light-colored volcanic tuff resembling pozzolana in composition and occurring especially on the lower Rhine where it is ground for use in a hydraulic cement
What does TRASS mean? - Definitions. net
Trass is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar It is a grey or cream-coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff
Trass — Grokipedia
Trass, a volcanic tuff from the Eifel region of Germany, shares pozzolanic characteristics with several global analogs, which provide context for its unique applications in hydraulic construction
TRASS Definition Meaning | Dictionary. com
TRASS definition: a light-colored type of volcanic tuff used in making water-resistant cement and mortar See examples of trass used in a sentence
Trass Definition Meaning - YourDictionary
When lime is used as a matrix, certain natural earths such as pozzuolana or trass, or, failing these, powdered bricks or tiles, may be used instead of sand with great advantage
Trass Definition, Meaning Usage | FineDictionary. com
Trass closely resembles pozzuolana, and like that is extensively used for hydraulic cement, especially by the Dutch engineers It is largely quarried for that purpose along the Rhine, between Mainz and Cologne
trass - Wiktionary, the free dictionary
Noun trass (countable and uncountable, plural trasses) (geology) A white to grey volcanic tufa, formed of decomposed trachytic cinders, sometimes used as a cement A coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water

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